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If debugging, store a malloc circular log for easier debugging

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This commit is contained in:
Maria Matejka 2024-05-31 15:16:41 +02:00
parent ce1a8be9af
commit 31d5ffa4a9
2 changed files with 30 additions and 1 deletions
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2
lib/resource.h
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@ -179,7 +179,7 @@ void resource_sys_init(void);
#define xrealloc bird_xrealloc
void *xmalloc(unsigned);
void *xrealloc(void *, unsigned);
#define xfree(x) free(x)
void xfree(void *);
#endif
#endif

29
lib/xmalloc.c
View File

@ -10,9 +10,25 @@
#include "nest/bird.h"
#include "lib/resource.h"
#include "lib/timer.h"
#ifndef HAVE_LIBDMALLOC
#if DEBUGGING
struct minfo {
void *ptr;
uint size;
uint action;
uint thread_id;
btime time;
} minfo_block[65536];
_Atomic uint minfo_pos;
#define MINFO(p, s, a) minfo_block[atomic_fetch_add_explicit(&minfo_pos, 1, memory_order_acq_rel) % 65536] = (struct minfo) { .ptr = p, .size = s, .action = a, .thread_id = THIS_THREAD_ID, .time = current_time_now(), }
#else
#define MINFO(...)
#endif
/**
* xmalloc - malloc with checking
* @size: block size
@ -26,7 +42,10 @@
void *
xmalloc(uint size)
{
void *p = malloc(size);
MINFO(p, size, 1);
if (p)
return p;
die("Unable to allocate %d bytes of memory", size);
@ -47,9 +66,19 @@ void *
xrealloc(void *ptr, uint size)
{
void *p = realloc(ptr, size);
MINFO(ptr, 0, 2);
MINFO(p, size, 3);
if (p)
return p;
die("Unable to allocate %d bytes of memory", size);
}
void xfree(void *p)
{
MINFO(p, 0, 4);
free(p);
}
#endif