[Scummvm-cvs-logs] SF.net SVN: scummvm:[38635] scummvm/trunk/engines/sci/engine/seg_manager.h
aquadran at users.sourceforge.net
aquadran at users.sourceforge.net
Fri Feb 20 23:29:49 CET 2009
Revision: 38635
http://scummvm.svn.sourceforge.net/scummvm/?rev=38635&view=rev
Author: aquadran
Date: 2009-02-20 22:29:49 +0000 (Fri, 20 Feb 2009)
Log Message:
-----------
formating
Modified Paths:
--------------
scummvm/trunk/engines/sci/engine/seg_manager.h
Modified: scummvm/trunk/engines/sci/engine/seg_manager.h
===================================================================
--- scummvm/trunk/engines/sci/engine/seg_manager.h 2009-02-20 22:21:33 UTC (rev 38634)
+++ scummvm/trunk/engines/sci/engine/seg_manager.h 2009-02-20 22:29:49 UTC (rev 38635)
@@ -32,31 +32,28 @@
#include "sci/include/vm.h"
#define DEFAULT_SCRIPTS 32
-#define DEFAULT_OBJECTS 8 /* default # of objects per script */
-#define DEFAULT_OBJECTS_INCREMENT 4 /* Number of additional objects to
-** instantiate if we're running out of them */
+#define DEFAULT_OBJECTS 8 // default # of objects per script
+#define DEFAULT_OBJECTS_INCREMENT 4 // Number of additional objects to instantiate if we're running out of them
-/* SCRIPT_ID must be 0 */
+// SCRIPT_ID must be 0
typedef enum {
-SCRIPT_ID,
-SEG_ID
+ SCRIPT_ID,
+ SEG_ID
} id_flag;
-//void dbg_print( const char* msg, void *i ); /* for debug only */
+//void dbg_print( const char* msg, void *i ); // for debug only
-/* verify the the given condition is true, output the message if condition is false, and exit
-** Parameters:
-** cond - condition to be verified
-** msg - the message to be printed if condition fails
-** return:
-** none, terminate the program if fails
-*/
-#define VERIFY( cond, msg ) if (! ( cond ) ) {\
- sciprintf( "%s, line, %d, %s\n", __FILE__, __LINE__, msg ); \
- BREAKPOINT(); \
+// verify the the given condition is true, output the message if condition is false, and exit
+// Parameters:
+// cond - condition to be verified
+// msg - the message to be printed if condition fails
+// return:
+// none, terminate the program if fails
+#define VERIFY( cond, msg ) if (!(cond)) {\
+ sciprintf("%s, line, %d, %s\n", __FILE__, __LINE__, msg); \
+ BREAKPOINT(); \
}
-
#define MEM_OBJ_INVALID 0
#define MEM_OBJ_SCRIPT 1
#define MEM_OBJ_CLONES 2
@@ -68,558 +65,431 @@
#define MEM_OBJ_HUNK 8
#define MEM_OBJ_DYNMEM 9
#define MEM_OBJ_RESERVED 10
-#define MEM_OBJ_MAX MEM_OBJ_RESERVED /* For sanity checking */
+#define MEM_OBJ_MAX MEM_OBJ_RESERVED // For sanity checking
+
typedef int mem_obj_enum;
struct _mem_obj;
-#define GET_SEGMENT(mgr, index, rtype) ((index) > 0 && (mgr).heap_size > index)? \
- (((mgr).heap[index] && (mgr).heap[index]->type == rtype)? (mgr).heap[index] \
- : NULL) /* Type does not match */ \
- : NULL /* Invalid index */
+#define GET_SEGMENT(mgr, index, rtype) ((index) > 0 && (mgr).heap_size > index) ? \
+ (((mgr).heap[index] && (mgr).heap[index]->type == rtype)? (mgr).heap[index] : NULL) : NULL
-#define GET_SEGMENT_ANY(mgr, index) ((index) > 0 && (mgr).heap_size > index)? \
- (((mgr).heap[index])? (mgr).heap[index] \
- : NULL) /* Type does not match */ \
- : NULL /* Invalid index */
+#define GET_SEGMENT_ANY(mgr, index) ((index) > 0 && (mgr).heap_size > index) ? \
+ (((mgr).heap[index])? (mgr).heap[index] : NULL) : NULL
-#define GET_OBJECT_SEGMENT(mgr, index) ((index) > 0 && (mgr).heap_size > index)? \
- (((mgr).heap[index] \
- && ((mgr).heap[index]->type == MEM_OBJ_SCRIPT \
- || (mgr).heap[index]->type == MEM_OBJ_CLONES))? (mgr).heap[index] \
- : NULL) /* Type does not match */ \
- : NULL /* Invalid index */
+#define GET_OBJECT_SEGMENT(mgr, index) ((index) > 0 && (mgr).heap_size > index) ? \
+ (((mgr).heap[index] && ((mgr).heap[index]->type == MEM_OBJ_SCRIPT || (mgr).heap[index]->type == MEM_OBJ_CLONES))? (mgr).heap[index] \
+ : NULL): NULL
-
typedef struct _seg_manager_t {
-int_hash_map_t* id_seg_map; /* id - script id; seg - index of heap */
-struct _mem_obj** heap;
-int heap_size; /* size of the heap */
-int reserved_id;
-int exports_wide;
-int sci1_1;
+ int_hash_map_t *id_seg_map; // id - script id; seg - index of heap
+ struct _mem_obj **heap;
+ int heap_size; // size of the heap
+ int reserved_id;
+ int exports_wide;
+ int sci1_1;
-int gc_mark_bits; /* For standard Mark&Sweep:
-** 1 or 0, depending on what unreachable/freshly allocated
-** memory is tagged as */
-size_t mem_allocated; /* Total amount of memory allocated */
+ int gc_mark_bits;
+ // For standard Mark&Sweep:
+ // 1 or 0, depending on what unreachable/freshly allocated
+ // memory is tagged as
+ size_t mem_allocated; // Total amount of memory allocated
-seg_id_t clones_seg_id; /* ID of the (a) clones segment */
-seg_id_t lists_seg_id; /* ID of the (a) list segment */
-seg_id_t nodes_seg_id; /* ID of the (a) node segment */
-seg_id_t hunks_seg_id; /* ID of the (a) hunk segment */
+ seg_id_t clones_seg_id; // ID of the (a) clones segment
+ seg_id_t lists_seg_id; // ID of the (a) list segment
+ seg_id_t nodes_seg_id; // ID of the (a) node segment
+ seg_id_t hunks_seg_id; // ID of the (a) hunk segment
} seg_manager_t;
+// Toplevel functionality
+void sm_init(seg_manager_t *self, int sci1_1);
+// Initialize the segment manager
-/*==============================================================*/
-/* Toplevel functionality */
-/*==============================================================*/
-void
-sm_init(seg_manager_t* self, int sci1_1);
-/* Initialize the segment manager
-*/
+void sm_destroy(seg_manager_t *self);
+// Deallocate all memory associated with the segment manager
-void
-sm_destroy(seg_manager_t* self);
-/* Deallocate all memory associated with the segment manager
-*/
+void sm_gc(seg_manager_t *self, struct _state *s);
+// Perform garbage collection
+// Parameters: (state_t *) s: The state to operate on
+// Effects : Unreachable objects in 's' are deallocated
-void
-sm_gc(seg_manager_t *self, struct _state *s);
-/* Perform garbage collection
-** Parameters: (state_t *) s: The state to operate on
-** Effects : Unreachable objects in 's' are deallocated
-*/
+// 1. Scripts
+void sm_free_script(mem_obj_t* mem);
+mem_obj_t *sm_allocate_script(struct _seg_manager_t* self, struct _state *s, int script_nr, int* seg_id);
+// Allocate a script into the segment manager
+// Parameters: (int) script_nr: number of the script to load
+// (state_t *) s: The state containing resource manager handlers to load the
+// script data
+// Returns : (int) 0 on failure, 1 on success
+// (int) *seg_id: The segment ID of the newly allocated segment, on success
-/*==============================================================*/
-/* 1. Scripts */
-/*==============================================================*/
+// The script must then be initialised; see section (1b.), below.
+int sm_deallocate_script(struct _seg_manager_t* self, int script_nr);
+// Forcefully deallocate a previously allocated script
+// Parameters: (int) script_nr: number of the script to deallocate
+// Returns : (int) 1 on success, 0 on failure
-void
-sm_free_script(mem_obj_t* mem);
+int sm_script_is_loaded(struct _seg_manager_t* self, int id, id_flag flag);
+// Determines whether a script has been loaded yet
+// Parameters: (int) id: number of the script or ID of the script segment to check for
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
-mem_obj_t*
-sm_allocate_script(struct _seg_manager_t* self, struct _state *s, int script_nr, int* seg_id);
-/* Allocate a script into the segment manager
-** Parameters: (int) script_nr: number of the script to load
-** (state_t *) s: The state containing resource manager handlers to load the
-** script data
-** Returns : (int) 0 on failure, 1 on success
-** (int) *seg_id: The segment ID of the newly allocated segment, on success
+guint16 sm_validate_export_func(struct _seg_manager_t* self, int pubfunct, int seg);
+// Validate whether the specified public function is exported by the script in the specified segment
+// Parameters: (int) pubfunct: Index of the function to validate
+// (int) seg: Segment ID of the script the check is to be performed for
+// Returns : (guint16) 0 if the public function is invalid, its offset into the script's segment
+// otherwise
-** The script must then be initialised; see section (1b.), below.
-*/
+int sm_seg_get(seg_manager_t* self, int script_nr);
+// Get the segment ID associated with a script number
+// Parameters: (int) script_nr: Number of the script to look up
+// Returns : (int) The associated segment ID, or -1 if no matching segment exists
+// This function is "pure" (i.e, it doesn't modify anything).
-int
-sm_deallocate_script(struct _seg_manager_t* self, int script_nr);
-/* Forcefully deallocate a previously allocated script
-** Parameters: (int) script_nr: number of the script to deallocate
-** Returns : (int) 1 on success, 0 on failure
-*/
-int
-sm_script_is_loaded(struct _seg_manager_t* self, int id, id_flag flag);
-/* Determines whether a script has been loaded yet
-** Parameters: (int) id: number of the script or ID of the script segment to check for
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-*/
-guint16
-sm_validate_export_func(struct _seg_manager_t* self, int pubfunct, int seg);
-/* Validate whether the specified public function is exported by the script in the specified segment
-** Parameters: (int) pubfunct: Index of the function to validate
-** (int) seg: Segment ID of the script the check is to be performed for
-** Returns : (guint16) 0 if the public function is invalid, its offset into the script's segment
-** otherwise
-**/
+// script lock operations
-int
-sm_seg_get(seg_manager_t* self, int script_nr);
-/* Get the segment ID associated with a script number
-** Parameters: (int) script_nr: Number of the script to look up
-** Returns : (int) The associated segment ID, or -1 if no matching segment exists
-** This function is "pure" (i.e, it doesn't modify anything).
-*/
+void sm_increment_lockers(struct _seg_manager_t *self, int id, id_flag flag);
+// Increments the number of lockers of the script in question by one
+// Parameters: (int) id: ID of the script or script segment to modify
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
-/**************************/
-/* script lock operations */
-/**************************/
+void sm_decrement_lockers(struct _seg_manager_t *self, int id, id_flag flag);
+// Decrements the number of lockers of the script in question by one
+// Parameters: (int) id: ID of the script or script segment to modify
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
-void
-sm_increment_lockers(struct _seg_manager_t* self, int id, id_flag flag);
-/* Increments the number of lockers of the script in question by one
-** Parameters: (int) id: ID of the script or script segment to modify
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-*/
+int sm_get_lockers(struct _seg_manager_t *self, int id, id_flag flag);
+// Retrieves the number of locks held on this script
+// Parameters: (int) id: ID of the script or script segment to read from
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
+// Returns : (int) The number of locks held on the previously identified script
-void
-sm_decrement_lockers(struct _seg_manager_t* self, int id, id_flag flag);
-/* Decrements the number of lockers of the script in question by one
-** Parameters: (int) id: ID of the script or script segment to modify
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-*/
-int
-sm_get_lockers(struct _seg_manager_t* self, int id, id_flag flag);
-/* Retrieves the number of locks held on this script
-** Parameters: (int) id: ID of the script or script segment to read from
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-** Returns : (int) The number of locks held on the previously identified script
-*/
+void sm_set_lockers(struct _seg_manager_t *self, int lockers, int id, id_flag flag);
+// Sets the number of locks held on the specified script
+// Parameters: (int) id: ID of the script or script segment to modify
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
-void
-sm_set_lockers(struct _seg_manager_t* self, int lockers, int id, id_flag flag);
-/* Sets the number of locks held on the specified script
-** Parameters: (int) id: ID of the script or script segment to modify
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-*/
-byte *
-sm_get_synonyms(struct _seg_manager_t* self, int id, id_flag flag);
-/* Retrieves a pointer to the synonyms associated with the specified script
-** Parameters: (int) id: ID of the script or script segment to read from
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-** Returns : (byte *) Pointer to the synonyms, in non-parsed format.
-** A dynamic failure is issued if the specified ID does not reference a proper script.
-*/
+byte *sm_get_synonyms(struct _seg_manager_t *self, int id, id_flag flag);
+// Retrieves a pointer to the synonyms associated with the specified script
+// Parameters: (int) id: ID of the script or script segment to read from
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
+// Returns : (byte *) Pointer to the synonyms, in non-parsed format.
+// A dynamic failure is issued if the specified ID does not reference a proper script.
-int
-sm_get_synonyms_nr(struct _seg_manager_t* self, int id, id_flag flag);
-/* Retrieves the number of synonyms associated with the specified script
-** Parameters: (int) id: ID of the script or script segment to read from
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-** Returns : (int) The number of synonyms associated with the specified script
-** A dynamic failure is issued if the specified ID does not reference a proper script.
-*/
+int sm_get_synonyms_nr(struct _seg_manager_t *self, int id, id_flag flag);
+// Retrieves the number of synonyms associated with the specified script
+// Parameters: (int) id: ID of the script or script segment to read from
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
+// Returns : (int) The number of synonyms associated with the specified script
+// A dynamic failure is issued if the specified ID does not reference a proper script.
-/*==============================================================*/
-/* 1b. Script Initialisation */
-/*==============================================================*/
-/*******************************************/
-/* The set of functions below are intended */
-/* to be used during script instantiation, */
-/* i.e. loading and linking. */
-/*******************************************/
-void
-sm_script_initialise_locals_zero(struct _seg_manager_t *self, seg_id_t seg, int nr);
-/* Initializes a script's local variable block
-** Parameters: (seg_id_t) seg: Segment containing the script to initialize
-** (int) nr: Number of local variables to allocate
-** All variables are initialized to zero.
-*/
+// 1b. Script Initialisation
-void
-sm_script_initialise_locals(struct _seg_manager_t *self, reg_t location);
-/* Initializes a script's local variable block according to a prototype
-** Parameters: (reg_t) location: Location to initialize from
-*/
+// The set of functions below are intended
+// to be used during script instantiation,
+// i.e. loading and linking.
-object_t *
-sm_script_obj_init(seg_manager_t *self, struct _state *s, reg_t obj_pos);
-/* Initializes an object within the segment manager
-** Parameters: (reg_t) obj_pos: Location (segment, offset) of the object
-** Returns : (object_t *) A newly created object_t describing the object
-** obj_pos must point to the beginning of the script/class block (as opposed
-** to what the VM considers to be the object location)
-** The corresponding object_t is stored within the relevant script.
-*/
+void sm_script_initialise_locals_zero(struct _seg_manager_t *self, seg_id_t seg, int nr);
+// Initializes a script's local variable block
+// Parameters: (seg_id_t) seg: Segment containing the script to initialize
+// (int) nr: Number of local variables to allocate
+// All variables are initialized to zero.
-void
-sm_script_add_code_block(struct _seg_manager_t* self, reg_t location);
-/* Informs the segment manager that a code block must be relocated
-** Parameters: (reg_t) location: Start of block to relocate
-*/
-void
-sm_set_export_width(struct _seg_manager_t* self, int flag);
-/* Tells the segment manager whether exports are wide (32-bit) or not.
-** Parameters: (int) flag: 1 if exports are wide, 0 otherwise */
+void sm_script_initialise_locals(struct _seg_manager_t *self, reg_t location);
+// Initializes a script's local variable block according to a prototype
+// Parameters: (reg_t) location: Location to initialize from
-void
-sm_script_relocate(struct _seg_manager_t* self, reg_t block);
-/* Processes a relocation block witin a script
-** Parameters: (reg_t) obj_pos: Location (segment, offset) of the block
-** Returns : (object_t *) Location of the relocation block
-** This function is idempotent, but it must only be called after all
-** objects have been instantiated, or a run-time error will occur.
-*/
-void
-sm_script_free_unused_objects(struct _seg_manager_t *self, seg_id_t segid);
-/* Deallocates all unused but allocated entries for objects
-** Parameters: (seg_id_t) segid: segment of the script to prune in this way
-** These entries are created during script instantiation; deallocating them
-** frees up some additional memory.
-*/
+object_t *sm_script_obj_init(seg_manager_t *self, struct _state *s, reg_t obj_pos);
+// Initializes an object within the segment manager
+// Parameters: (reg_t) obj_pos: Location (segment, offset) of the object
+// Returns : (object_t *) A newly created object_t describing the object
+// obj_pos must point to the beginning of the script/class block (as opposed
+// to what the VM considers to be the object location)
+// The corresponding object_t is stored within the relevant script.
-void
-sm_set_export_table_offset(struct _seg_manager_t* self, int offset, int id, id_flag flag);
-/* Sets the script-relative offset of the exports table
-** Parameters: (int) offset: The script-relative exports table offset
-** (int) id: ID of the script or script segment to write to
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-** A dynamic failure is issued if the specified ID does not reference a proper script.
-*/
-void
-sm_set_synonyms_offset(struct _seg_manager_t* self, int offset, int id, id_flag flag);
-/* Sets the script-relative offset of the synonyms associated with the specified script
-** Parameters: (int) offset: The script-relative offset of the synonyms block
-** (int) id: ID of the script or script segment to write to
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-** A dynamic failure is issued if the specified ID does not reference a proper script.
-*/
+void sm_script_add_code_block(struct _seg_manager_t *self, reg_t location);
+// Informs the segment manager that a code block must be relocated
+// Parameters: (reg_t) location: Start of block to relocate
-void
-sm_set_synonyms_nr(struct _seg_manager_t* self, int nr, int id, id_flag flag);
-/* Sets the number of synonyms associated with the specified script
-** Parameters: (int) nr: The number of synonyms, as to be stored within the script
-** (int) id: ID of the script or script segment to write to
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-** A dynamic failure is issued if the specified ID does not reference a proper script.
-*/
-void
-sm_mark_script_deleted(seg_manager_t* self, int script_nr);
-/* Marks the script identified by its script number as deleted
-** Parameters: (int) script_nr: Script number to mark as deleted
-** This will not actually delete the script. If references remain present on the
-** heap or the stack, the script will stay in memory in a quasi-deleted state until
-** either unreachable (resulting in its eventual deletion) or reloaded (resulting
-** in its data being updated).
-*/
+void sm_set_export_width(struct _seg_manager_t *self, int flag);
+// Tells the segment manager whether exports are wide (32-bit) or not.
+// Parameters: (int) flag: 1 if exports are wide, 0 otherwise
-void
-sm_unmark_script_deleted(seg_manager_t* self, int script_nr);
-/* Marks the script identified by its script number as not deleted
-** Parameters: (int) script_nr: Script number to mark as not deleted
-*/
+void sm_script_relocate(struct _seg_manager_t *self, reg_t block);
+// Processes a relocation block witin a script
+// Parameters: (reg_t) obj_pos: Location (segment, offset) of the block
+// Returns : (object_t *) Location of the relocation block
+// This function is idempotent, but it must only be called after all
+// objects have been instantiated, or a run-time error will occur.
-int
-sm_script_is_marked_as_deleted(seg_manager_t* self, seg_id_t seg);
-/* Determines whether the script referenced by the indicated segment is marked as being deleted.
-** Parameters: (seg_id_t) Segment ID of the script to investigate
-** Returns : (int) 1 iff seg points to a script and the segment is deleted, 0 otherwise
-** Will return 0 when applied to an invalid or non-script seg.
-*/
+void sm_script_free_unused_objects(struct _seg_manager_t *self, seg_id_t segid);
+// Deallocates all unused but allocated entries for objects
+// Parameters: (seg_id_t) segid: segment of the script to prune in this way
+// These entries are created during script instantiation; deallocating them
+// frees up some additional memory.
-/*==============================================================*/
-/* 2. Clones */
-/*==============================================================*/
+void sm_set_export_table_offset(struct _seg_manager_t *self, int offset, int id, id_flag flag);
+// Sets the script-relative offset of the exports table
+// Parameters: (int) offset: The script-relative exports table offset
+// (int) id: ID of the script or script segment to write to
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
+// A dynamic failure is issued if the specified ID does not reference a proper script.
-clone_t*
-sm_alloc_clone(struct _seg_manager_t *self, reg_t *addr);
-/* Allocate a fresh clone
-** Returns : (clone_t*): Reference to the memory allocated for the clone
-** (reg_t) *addr: The offset of the freshly allocated clone
-*/
-void
-sm_free_clone(struct _seg_manager_t *self, reg_t addr);
-/* Deallocates a clone
-** Parameters: (reg_t) addr: Offset of the clone scheduled for termination
-*/
+void sm_set_synonyms_offset(struct _seg_manager_t *self, int offset, int id, id_flag flag);
+// Sets the script-relative offset of the synonyms associated with the specified script
+// Parameters: (int) offset: The script-relative offset of the synonyms block
+// (int) id: ID of the script or script segment to write to
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
+// A dynamic failure is issued if the specified ID does not reference a proper script.
+void sm_set_synonyms_nr(struct _seg_manager_t *self, int nr, int id, id_flag flag);
+// Sets the number of synonyms associated with the specified script
+// Parameters: (int) nr: The number of synonyms, as to be stored within the script
+// (int) id: ID of the script or script segment to write to
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
+// A dynamic failure is issued if the specified ID does not reference a proper script.
-/*==============================================================*/
-/* Objects (static, from Scripts, and dynmic, from Clones) */
-/*==============================================================*/
-/* Not all of these functions are fully operational for clones ATM */
+void sm_mark_script_deleted(seg_manager_t *self, int script_nr);
+// Marks the script identified by its script number as deleted
+// Parameters: (int) script_nr: Script number to mark as deleted
+// This will not actually delete the script. If references remain present on the
+// heap or the stack, the script will stay in memory in a quasi-deleted state until
+// either unreachable (resulting in its eventual deletion) or reloaded (resulting
+// in its data being updated).
-gint16
-sm_get_heap(struct _seg_manager_t* self, reg_t reg);
-/* Retrieves a 16 bit value from within a script's heap representation
-** Parameters: (reg_t) reg: The address to read from
-** Returns : (gint16) The value read from the specified location
-*/
-void
-sm_put_heap(struct _seg_manager_t* self, reg_t reg, gint16 value);
-/* Writes a 16 bit value into a script's heap representation
-** Parameters: (reg_t) reg: The address to write to
-** (gint16) value: The value to write
-*/
+void sm_unmark_script_deleted(seg_manager_t *self, int script_nr);
+// Marks the script identified by its script number as not deleted
+// Parameters: (int) script_nr: Script number to mark as not deleted
-void
-sm_mcpy_in_out(seg_manager_t* self, int dst, const void* src, size_t n, int id, int flag);
-/* Copies a byte string into a script's heap representation
-** Parameters: (int) dst: The script-relative offset of the destination area
-** (const void *) src: Pointer to the data source location
-** (size_t) n: Number of bytes to copy
-** (int) id: ID of the script or script segment to write to
-** (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
-** by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
-** but less convenient.
-** A dynamic failure is issued if the specified ID does not reference a proper script.
-*/
+int sm_script_is_marked_as_deleted(seg_manager_t *self, seg_id_t seg);
+// Determines whether the script referenced by the indicated segment is marked as being deleted.
+// Parameters: (seg_id_t) Segment ID of the script to investigate
+// Returns : (int) 1 iff seg points to a script and the segment is deleted, 0 otherwise
+// Will return 0 when applied to an invalid or non-script seg.
-/*==============================================================*/
-/* 4. Stack */
-/*==============================================================*/
-dstack_t *
-sm_allocate_stack(struct _seg_manager_t *self, int size, seg_id_t *segid);
-/* Allocates a data stack
-** Parameters: (int) size: Number of stack entries to reserve
-** Returns : (dstack_t *): The physical stack
-** (seg_id_t) segid: Segment ID of the stack
-*/
+// 2. Clones
+clone_t *sm_alloc_clone(struct _seg_manager_t *self, reg_t *addr);
+// Allocate a fresh clone
+// Returns : (clone_t*): Reference to the memory allocated for the clone
+// (reg_t) *addr: The offset of the freshly allocated clone
-/*==============================================================*/
-/* 5. System Strings */
-/*==============================================================*/
+void sm_free_clone(struct _seg_manager_t *self, reg_t addr);
+// Deallocates a clone
+// Parameters: (reg_t) addr: Offset of the clone scheduled for termination
-sys_strings_t *
-sm_allocate_sys_strings(struct _seg_manager_t *self, seg_id_t *segid);
-/* Allocates a system string table
-** Returns : (dstack_t *): The physical stack
-** (seg_id_t) segid: Segment ID of the stack
-** See also sys_string_acquire();
-*/
+// Objects (static, from Scripts, and dynmic, from Clones)
+// Not all of these functions are fully operational for clones ATM
-/*==============================================================*/
-/* 6, 7. Lists and Nodes */
-/*==============================================================*/
+gint16 sm_get_heap(struct _seg_manager_t* self, reg_t reg);
+// Retrieves a 16 bit value from within a script's heap representation
+// Parameters: (reg_t) reg: The address to read from
+// Returns : (gint16) The value read from the specified location
-list_t*
-sm_alloc_list(struct _seg_manager_t *self, reg_t *addr);
-/* Allocate a fresh list
-** Returns : (listY_t*): Reference to the memory allocated for the list
-** (reg_t) *addr: The offset of the freshly allocated list
-*/
-void
-sm_free_list(struct _seg_manager_t *self, reg_t addr);
-/* Deallocates a list
-** Parameters: (reg_t) addr: Offset of the list scheduled for termination
-*/
+void sm_put_heap(struct _seg_manager_t *self, reg_t reg, gint16 value);
+// Writes a 16 bit value into a script's heap representation
+// Parameters: (reg_t) reg: The address to write to
+// (gint16) value: The value to write
-node_t*
-sm_alloc_node(struct _seg_manager_t *self, reg_t *addr);
-/* Allocate a fresh node
-** Returns : (node_t*): Reference to the memory allocated for the node
-** (reg_t) *addr: The offset of the freshly allocated node
-*/
+void sm_mcpy_in_out(seg_manager_t* self, int dst, const void *src, size_t n, int id, int flag);
+// Copies a byte string into a script's heap representation
+// Parameters: (int) dst: The script-relative offset of the destination area
+// (const void *) src: Pointer to the data source location
+// (size_t) n: Number of bytes to copy
+// (int) id: ID of the script or script segment to write to
+// (id_flag) flag: Whether to address the script by script number (SCRIPT_ID) or
+// by its segment (SEG_ID). SEG_ID is faster than SCRIPT_ID,
+// but less convenient.
+// A dynamic failure is issued if the specified ID does not reference a proper script.
-void
-sm_free_node(struct _seg_manager_t *self, reg_t addr);
-/* Deallocates a list node
-** Parameters: (reg_t) addr: Offset of the node scheduled for termination
-*/
+// 4. Stack
+dstack_t *sm_allocate_stack(struct _seg_manager_t *self, int size, seg_id_t *segid);
+// Allocates a data stack
+// Parameters: (int) size: Number of stack entries to reserve
+// Returns : (dstack_t *): The physical stack
+// (seg_id_t) segid: Segment ID of the stack
-/*==============================================================*/
-/* 8. Hunk Memory */
-/*==============================================================*/
-hunk_t*
-sm_alloc_hunk_entry(struct _seg_manager_t *self, const char *hunk_type, int size, reg_t *addr);
-/* Allocate a fresh chunk of the hunk
-** Parameters: (int) size: Number of bytes to allocate for the hunk entry
-** (const char *) hunk_type: A descriptive string for the hunk entry,
-** for debugging purposes
-** Returns : (hunk_t*): Reference to the memory allocated for the hunk piece
-** (reg_t) *addr: The offset of the freshly allocated hunk entry
-*/
+// 5. System Strings
-void
-sm_free_hunk_entry(struct _seg_manager_t *self, reg_t addr);
-/* Deallocates a hunk eentry
-** Parameters: (reg_t) addr: Offset of the hunk entry to delete
-*/
+sys_strings_t *sm_allocate_sys_strings(struct _seg_manager_t *self, seg_id_t *segid);
+// Allocates a system string table
+// Returns : (dstack_t *): The physical stack
+// (seg_id_t) segid: Segment ID of the stack
+// See also sys_string_acquire();
+// 6, 7. Lists and Nodes
-/*==============================================================*/
-/* 9. Dynamic Memory */
-/*==============================================================*/
+list_t *sm_alloc_list(struct _seg_manager_t *self, reg_t *addr);
+// Allocate a fresh list
+// Returns : (listY_t*): Reference to the memory allocated for the list
+// (reg_t) *addr: The offset of the freshly allocated list
-unsigned char *
-sm_alloc_dynmem(struct _seg_manager_t *self, int size, const char *description, reg_t *addr);
-/* Allocate some dynamic memory
-** Parameters: (int) size: Number of bytes to allocate
-** (const char_ *) description: A descriptive string,
-** for debugging purposes
-** Returns : (unsigned char*): Raw pointer into the allocated dynamic memory
-** (reg_t) *addr: The offset of the freshly allocated X
-*/
-int
-sm_free_dynmem(struct _seg_manager_t *self, reg_t addr);
-/* Deallocates a piece of dynamic memory
-** Parameters: (reg_t) addr: Offset of the dynmem chunk to free
-*/
+void sm_free_list(struct _seg_manager_t *self, reg_t addr);
+// Deallocates a list
+// Parameters: (reg_t) addr: Offset of the list scheduled for termination
-const char *
-sm_get_description(struct _seg_manager_t *self, reg_t addr);
-/* Gets the description of a dynmem segment
-** Parameters: (reg_t) addr: Segment to describe
-** Returns : (const char *): Pointer to the descriptive string set in
-** sm_alloc_dynmem
-*/
-/*==============================================================*/
-/* 10. Reserved segments */
-/*==============================================================*/
+node_t *sm_alloc_node(struct _seg_manager_t *self, reg_t *addr);
+// Allocate a fresh node
+// Returns : (node_t*): Reference to the memory allocated for the node
+// (reg_t) *addr: The offset of the freshly allocated node
-seg_id_t
-sm_allocate_reserved_segment(struct _seg_manager_t *self, char *name);
-/* Reserves a special-purpose segment
-** Parameters: (char *) name: A string name identifying the segment (the string is cloned and retained)
-** Returns : A fresh segment ID for the segment in question
-** Reserved segments are never used by the segment manager. They can be used to tag special-purpose addresses.
-** Segment 0 is implicitly reserved for numbers.
-*/
+void sm_free_node(struct _seg_manager_t *self, reg_t addr);
+// Deallocates a list node
+// Parameters: (reg_t) addr: Offset of the node scheduled for termination
-/*==============================================================*/
-/* Generic Operations on Segments and Addresses */
-/*==============================================================*/
-byte *
-sm_dereference(struct _seg_manager_t *self, reg_t reg, int *size);
-/* Dereferences a raw memory pointer
-** Parameters: (reg_t) reg: The reference to dereference
-** Returns : (byte *) The data block referenced
-** (int) size: (optionally) the theoretical maximum size of it
-*/
+// 8. Hunk Memory
+hunk_t *sm_alloc_hunk_entry(struct _seg_manager_t *self, const char *hunk_type, int size, reg_t *addr);
+// Allocate a fresh chunk of the hunk
+// Parameters: (int) size: Number of bytes to allocate for the hunk entry
+// (const char *) hunk_type: A descriptive string for the hunk entry,
+// for debugging purposes
+// Returns : (hunk_t*): Reference to the memory allocated for the hunk piece
+// (reg_t) *addr: The offset of the freshly allocated hunk entry
-/*==============================================================*/
-/* 11. Segment interface, primarily for GC */
-/*==============================================================*/
-typedef struct _seg_interface {
- seg_manager_t *segmgr;
- mem_obj_t *mobj;
- seg_id_t seg_id;
- mem_obj_enum type_id; /* Segment type */
- const char *type; /* String description of the segment type */
+void sm_free_hunk_entry(struct _seg_manager_t *self, reg_t addr);
+// Deallocates a hunk eentry
+// Parameters: (reg_t) addr: Offset of the hunk entry to delete
- reg_t
- (*find_canonic_address)(struct _seg_interface *self, reg_t sub_addr);
- /* Finds the canonic address associated with sub_reg
- ** Parameters: (reg_t) sub_addr: The base address whose canonic address is to be found
- ** For each valid address a, there exists a canonic address c(a) such that c(a) = c(c(a)).
- ** This address "governs" a in the sense that deallocating c(a) will deallocate a.
- */
- void
- (*free_at_address)(struct _seg_interface *self, reg_t sub_addr);
- /* Deallocates all memory associated with the specified address
- ** Parameters: (reg_t) sub_addr: The address (within the given segment) to deallocate
- */
+// 9. Dynamic Memory
- void
- (*list_all_deallocatable)(struct _seg_interface *self, void *param, void (*note)(void *param, reg_t addr));
- /* Iterates over and reports all addresses within the current segment
- ** Parameters: note : (voidptr * addr) -> (): Invoked for each address on which free_at_address()
- ** makes sense
- ** (void *) param: Parameter passed to 'note'
- */
+unsigned char *sm_alloc_dynmem(struct _seg_manager_t *self, int size, const char *description, reg_t *addr);
+// Allocate some dynamic memory
+// Parameters: (int) size: Number of bytes to allocate
+// (const char_ *) description: A descriptive string,
+// for debugging purposes
+// Returns : (unsigned char*): Raw pointer into the allocated dynamic memory
+// (reg_t) *addr: The offset of the freshly allocated X
- void
- (*list_all_outgoing_references)(struct _seg_interface *self, struct _state *s, reg_t object, void *param, void (*note)(void *param, reg_t addr));
- /* Iterates over all references reachable from the specified object
- ** Parameters: (reg_t) object: The object (within the current segment) to analyse
- ** (void *) param: Parameter passed to 'note'
- ** note : (voidptr * addr) -> (): Invoked for each outgoing reference within the object
- ** Note: This function may also choose to report numbers (segment 0) as adresses
- */
+int sm_free_dynmem(struct _seg_manager_t *self, reg_t addr);
+// Deallocates a piece of dynamic memory
+// Parameters: (reg_t) addr: Offset of the dynmem chunk to free
- void
- (*deallocate_self)(struct _seg_interface *self);
- /* Deallocates the segment interface
- */
-} seg_interface_t;
+const char *sm_get_description(struct _seg_manager_t *self, reg_t addr);
+// Gets the description of a dynmem segment
+// Parameters: (reg_t) addr: Segment to describe
+// Returns : (const char *): Pointer to the descriptive string set in
+// sm_alloc_dynmem
-seg_interface_t *
-get_seg_interface(seg_manager_t *self, seg_id_t segid);
-/* Retrieves the segment interface to the specified segment
-** Parameters: (seg_id_t) segid: ID of the segment to look up
-** Returns : (seg_interface_t *): An interface to the specified segment ID, or NULL on error
-** The returned interface 'si' must be freed after use by calling 'si->dealloc_self(si)';
-*/
+// 10. Reserved segments
+seg_id_t sm_allocate_reserved_segment(struct _seg_manager_t *self, char *name);
+// Reserves a special-purpose segment
+// Parameters: (char *) name: A string name identifying the segment (the string is cloned and retained)
+// Returns : A fresh segment ID for the segment in question
+// Reserved segments are never used by the segment manager. They can be used to tag special-purpose addresses.
+// Segment 0 is implicitly reserved for numbers.
+
+// Generic Operations on Segments and Addresses
+
+byte *sm_dereference(struct _seg_manager_t *self, reg_t reg, int *size);
+// Dereferences a raw memory pointer
+// Parameters: (reg_t) reg: The reference to dereference
+// Returns : (byte *) The data block referenced
+// (int) size: (optionally) the theoretical maximum size of it
+
+// 11. Segment interface, primarily for GC
+
+typedef struct _seg_interface {
+ seg_manager_t *segmgr;
+ mem_obj_t *mobj;
+ seg_id_t seg_id;
+ mem_obj_enum type_id; // Segment type
+ const char *type; // String description of the segment type
+
+ reg_t (*find_canonic_address)(struct _seg_interface *self, reg_t sub_addr);
+ // Finds the canonic address associated with sub_reg
+ // Parameters: (reg_t) sub_addr: The base address whose canonic address is to be found
+ // For each valid address a, there exists a canonic address c(a) such that c(a) = c(c(a)).
+ // This address "governs" a in the sense that deallocating c(a) will deallocate a.
+
+ void (*free_at_address)(struct _seg_interface *self, reg_t sub_addr);
+ // Deallocates all memory associated with the specified address
+ // Parameters: (reg_t) sub_addr: The address (within the given segment) to deallocate
+
+ void (*list_all_deallocatable)(struct _seg_interface *self, void *param, void (*note)(void *param, reg_t addr));
+ // Iterates over and reports all addresses within the current segment
+ // Parameters: note : (voidptr * addr) -> (): Invoked for each address on which free_at_address()
+ // makes sense
+ // (void *) param: Parameter passed to 'note'
+
+ void (*list_all_outgoing_references)(struct _seg_interface *self, struct _state *s, reg_t object, void *param, void (*note)(void *param, reg_t addr));
+ // Iterates over all references reachable from the specified object
+ // Parameters: (reg_t) object: The object (within the current segment) to analyse
+ // (void *) param: Parameter passed to 'note'
+ // note : (voidptr * addr) -> (): Invoked for each outgoing reference within the object
+ // Note: This function may also choose to report numbers (segment 0) as adresses
+
+ void (*deallocate_self)(struct _seg_interface *self);
+ // Deallocates the segment interface
+} seg_interface_t;
+
+seg_interface_t *get_seg_interface(seg_manager_t *self, seg_id_t segid);
+// Retrieves the segment interface to the specified segment
+// Parameters: (seg_id_t) segid: ID of the segment to look up
+// Returns : (seg_interface_t *): An interface to the specified segment ID, or NULL on error
+// The returned interface 'si' must be freed after use by calling 'si->dealloc_self(si)';
+
#endif
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