#include <sys/types.h>
#include "ircd.h"
#include "ircd_alloc.h"
+#include "ircd_log.h"
#include "client.h"
#include "s_debug.h"
+#include "send.h"
#include <stdlib.h>
+#include <string.h>
-#include <assert.h>
+/* #include <assert.h> -- Now using assert in ircd_log.h */
#ifdef MDEBUG
void GC_gcollect(void);
extern int GC_find_leak;
+/** Header block to track an allocated block's information. */
struct MemHeader
{
- u_int32_t magic;
+ uint32_t magic;
char type[32];
char file[32];
int line;
time_t since;
};
+/** Overwrite \a len byte at \a p with 0xDEADBEEF.
+ * @param[out] p Memory buffer to overwrite.
+ * @param[in] len Number of bytes to overwrite.
+ */
void
memfrob(void *p, size_t len)
{
for (s = (char*)p, se = s + (len & ~3) - 4;
s <= se;
s += 4)
- *(u_int32_t*)s = *(u_int32_t*)pat;
+ *(uint32_t*)s = *(uint32_t*)pat;
for (se = s; se < s; s++)
*s = pat[i++];
}
-static size_t mdbg_bytes_allocated = 0, mdbg_blocks_allocated = 0;
+/** Total number of bytes allocated. */
+static size_t mdbg_bytes_allocated = 0;
+/** Total number of blocks allocated. */
+static size_t mdbg_blocks_allocated = 0;
+/** Last Unix time that we ran garbage collection. */
static time_t last_gcollect = 0;
-
+/** Minimum interval for garbage collection. */
#define GC_FREQ 5
+/** Check whether we should run garbage collection.
+ * If so, do it.
+ */
void
dbg_check_gcollect(void)
{
last_gcollect = CurrentTime;
}
+/** Allocate a block of memory.
+ * @param[in] size Number of bytes needed.
+ * @param[in] type Memory operation for block.
+ * @param[in] file File name of allocating function.
+ * @param[in] line Line number of allocating function.
+ * @return Pointer to the newly allocated block.
+ */
void*
dbg_malloc(size_t size, const char *type, const char *file, int line)
{
return (void*)(mh + 1);
}
+/** Allocate a zero-initialized block of memory.
+ * @param[in] size Number of bytes needed.
+ * @param[in] type Memory operation for block.
+ * @param[in] file File name of allocating function.
+ * @param[in] line Line number of allocating function.
+ * @return Pointer to the newly allocated block.
+ */
void*
dbg_malloc_zero(size_t size, const char *type, const char *file, int line)
{
return (void*)(mh + 1);
}
+/** Extend an allocated block of memory.
+ * @param[in] ptr Pointer to currently allocated block of memory (may be NULL).
+ * @param[in] size Minimum number of bytes for new block.
+ * @param[in] file File name of allocating function.
+ * @param[in] line Line number of allocating function.
+ * @return Pointer to the extended block of memory.
+ */
+void*
+dbg_realloc(void *ptr, size_t size, const char *file, int line)
+{
+ struct MemHeader *mh, *mh2;
+ if (ptr == NULL)
+ return dbg_malloc(size, "realloc", file, line);
+ mh = (struct MemHeader*)ptr - 1;
+ assert(mh->magic == 0xA110CA7E);
+ if (mh->length >= size)
+ return mh;
+ mh2 = dbg_malloc(size, "realloc", file, line);
+ if (mh2 == NULL)
+ {
+ dbg_free(mh+1, file, line);
+ return NULL;
+ }
+ memcpy(mh2+1, mh+1, mh->length);
+ dbg_free(mh+1, file, line);
+ return (void*)(mh2+1);
+}
+
+/** Deallocate a block of memory.
+ * @param[in] ptr Pointer to currently allocated block of memory (may be NULL).
+ * @param[in] file File name of deallocating function.
+ * @param[in] line Line number of deallocating function.
+ */
void
dbg_free(void *ptr, const char *file, int line)
{
dbg_check_gcollect();
}
+/** Report number of bytes currently allocated.
+ * @return Number of bytes allocated.
+ */
size_t
fda_get_byte_count(void)
{
return mdbg_bytes_allocated;
}
+/** Report number of blocks currently allocated.
+ * @return Number of blocks allocated.
+ */
size_t
fda_get_block_count(void)
{
#include <stdio.h>
+/** Callback for when the garbage collector detects a memory leak.
+ * @param[in] p Pointer to leaked memory.
+ * @param[in] sz Length of the block.
+ */
void
dbg_memory_leaked(void *p, int sz)
{
CurrentTime - mh->since));
}
+/** Initialize the memory debugging subsystem. */
void
mem_dbg_initialise(void)
{