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Add malloc logging tool

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STATIC_YOINK("enable_memory_log");
This commit is contained in:
Justine Tunney 2022-05-26 23:17:19 -07:00
parent 7e9fb0a9f1
commit cb67223051
25 changed files with 502 additions and 78 deletions
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17
libc/runtime/mmap.c
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@ -148,14 +148,6 @@ noasan static bool Automap(int count, int align, int *res) {
*res + count <= FRAME(kAutomapStart + (kAutomapSize - 1));
}
noasan static size_t GetMemtrackSize(struct MemoryIntervals *mm) {
size_t i, n;
for (n = i = 0; i < mm->i; ++i) {
n += ((size_t)(mm->p[i].y - mm->p[i].x) + 1) << 16;
}
return n;
}
static noasan void *FinishMemory(void *addr, size_t size, int prot, int flags,
int fd, int64_t off, int f, int x, int n,
struct DirectMap dm) {
@ -491,10 +483,15 @@ static noasan inline void *Mmap(void *addr, size_t size, int prot, int flags,
noasan void *mmap(void *addr, size_t size, int prot, int flags, int fd,
int64_t off) {
void *res;
size_t toto;
_spinlock(&_mmi.lock);
res = Mmap(addr, size, prot, flags, fd, off);
#if SYSDEBUG
toto = __strace > 0 ? GetMemtrackSize(&_mmi) : 0;
#endif
_spunlock(&_mmi.lock);
STRACE("mmap(%p, %'zu, %s, %s, %d, %'ld) → %p% m", addr, size,
DescribeProtFlags(prot), DescribeMapFlags(flags), fd, off, res);
STRACE("mmap(%p, %'zu, %s, %s, %d, %'ld) → %p% m (%'zu bytes total)", addr,
size, DescribeProtFlags(prot), DescribeMapFlags(flags), fd, off, res,
toto);
return res;
}