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-rw-r--r--generic/tclCkalloc.c77
1 files changed, 55 insertions, 22 deletions
diff --git a/generic/tclCkalloc.c b/generic/tclCkalloc.c
index a12f0cd..a85a0fd 100644
--- a/generic/tclCkalloc.c
+++ b/generic/tclCkalloc.c
@@ -13,7 +13,7 @@
*
* This code contributed by Karl Lehenbauer and Mark Diekhans
*
- * RCS: @(#) $Id: tclCkalloc.c,v 1.7 1999/11/19 06:34:23 hobbs Exp $
+ * RCS: @(#) $Id: tclCkalloc.c,v 1.8 2000/04/27 01:47:01 ericm Exp $
*/
#include "tclInt.h"
@@ -179,20 +179,34 @@ TclDumpMemoryInfo(outFile)
maximum_bytes_malloced);
}
+
/*
*----------------------------------------------------------------------
*
* ValidateMemory --
- * Procedure to validate allocted memory guard zones.
+ *
+ * Validate memory guard zones for a particular chunk of allocated
+ * memory.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Prints validation information about the allocated memory to stderr.
*
*----------------------------------------------------------------------
*/
+
static void
ValidateMemory(memHeaderP, file, line, nukeGuards)
- struct mem_header *memHeaderP;
- char *file;
- int line;
- int nukeGuards;
+ struct mem_header *memHeaderP; /* Memory chunk to validate */
+ char *file; /* File containing the call to
+ * Tcl_ValidateAllMemory */
+ int line; /* Line number of call to
+ * Tcl_ValidateAllMemory */
+ int nukeGuards; /* If non-zero, indicates that the
+ * memory guards are to be reset to 0
+ * after they have been printed */
{
unsigned char *hiPtr;
int idx;
@@ -253,14 +267,21 @@ ValidateMemory(memHeaderP, file, line, nukeGuards)
*----------------------------------------------------------------------
*
* Tcl_ValidateAllMemory --
- * Validates guard regions for all allocated memory.
+ *
+ * Validate memory guard regions for all allocated memory.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Displays memory validation information to stderr.
*
*----------------------------------------------------------------------
*/
void
Tcl_ValidateAllMemory (file, line)
- char *file;
- int line;
+ char *file; /* File from which Tcl_ValidateAllMemory was called */
+ int line; /* Line number of call to Tcl_ValidateAllMemory */
{
struct mem_header *memScanP;
@@ -278,16 +299,18 @@ Tcl_ValidateAllMemory (file, line)
*----------------------------------------------------------------------
*
* Tcl_DumpActiveMemory --
- * Displays all allocated memory to stderr.
+ *
+ * Displays all allocated memory to a file; if no filename is given,
+ * information will be written to stderr.
*
* Results:
- * Return TCL_ERROR if an error accessing the file occures, `errno'
- * will have the file error number left in it.
+ * Return TCL_ERROR if an error accessing the file occures, `errno'
+ * will have the file error number left in it.
*----------------------------------------------------------------------
*/
int
Tcl_DumpActiveMemory (fileName)
- char *fileName;
+ char *fileName; /* Name of the file to write info to */
{
FILE *fileP;
struct mem_header *memScanP;
@@ -597,13 +620,14 @@ Tcl_Realloc(ptr, size)
*----------------------------------------------------------------------
*
* MemoryCmd --
- * Implements the TCL memory command:
- * memory info
- * memory display
- * break_on_malloc count
- * trace_on_at_malloc count
- * trace on|off
- * validate on|off
+ * Implements the Tcl "memory" command, which provides Tcl-level
+ * control of Tcl memory debugging information.
+ * memory info
+ * memory display
+ * memory break_on_malloc count
+ * memory trace_on_at_malloc count
+ * memory trace on|off
+ * memory validate on|off
*
* Results:
* Standard TCL results.
@@ -769,13 +793,22 @@ CheckmemCmd(clientData, interp, argc, argv)
*----------------------------------------------------------------------
*
* Tcl_InitMemory --
- * Initialize the memory command.
+ *
+ * Create the "memory" and "checkmem" commands in the given
+ * interpreter.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * New commands are added to the interpreter.
*
*----------------------------------------------------------------------
*/
+
void
Tcl_InitMemory(interp)
- Tcl_Interp *interp;
+ Tcl_Interp *interp; /* Interpreter in which commands should be added */
{
TclInitDbCkalloc();
Tcl_CreateCommand (interp, "memory", MemoryCmd, (ClientData) NULL,