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libheaptrace: Report self consuming memory #14

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4 changes: 4 additions & 0 deletions heaptrace.h
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Original file line number Diff line number Diff line change
Expand Up @@ -5,8 +5,12 @@

#include <stdio.h>

#include <atomic>

extern FILE *outfp;

extern std::atomic<long long> mem_overhead;

#define TERM_COLOR_NORMAL ""
#define TERM_COLOR_RESET "\033[0m"
#define TERM_COLOR_BOLD "\033[1m"
Expand Down
56 changes: 45 additions & 11 deletions libheaptrace.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,8 @@ struct opts opts;

FILE *outfp;

std::atomic<long long> mem_overhead;

__constructor
static void heaptrace_init()
{
Expand Down Expand Up @@ -114,6 +116,8 @@ static void heaptrace_init()
pid, comm.c_str());
}

mem_overhead = 0;

initialized = true;
}

Expand Down Expand Up @@ -143,8 +147,10 @@ void* operator new(size_t size)
{
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return __libc_malloc(size);
}

tfs->hook_guard = true;

Expand All @@ -162,8 +168,10 @@ void* operator new[](size_t size)
{
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return __libc_malloc(size);
}

tfs->hook_guard = true;

Expand All @@ -182,6 +190,8 @@ void operator delete(void *ptr)
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized)) {
auto size = addrmap.find(ptr) != addrmap.end() ? addrmap[ptr].size : 0;
mem_overhead -= size;
__libc_free(ptr);
return;
}
Expand All @@ -201,6 +211,8 @@ void operator delete[](void *ptr)
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized)) {
auto size = addrmap.find(ptr) != addrmap.end() ? addrmap[ptr].size : 0;
mem_overhead -= size;
__libc_free(ptr);
return;
}
Expand All @@ -219,8 +231,10 @@ void* malloc(size_t size)
{
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return __libc_malloc(size);
}

tfs->hook_guard = true;

Expand All @@ -239,6 +253,8 @@ void free(void *ptr)
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized)) {
auto size = addrmap.find(ptr) != addrmap.end() ? addrmap[ptr].size : 0;
mem_overhead -= size;
__libc_free(ptr);
return;
}
Expand All @@ -257,8 +273,10 @@ void *calloc(size_t nmemb, size_t size)
{
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += nmemb * size;
return __libc_calloc(nmemb, size);
}

tfs->hook_guard = true;

Expand All @@ -276,8 +294,11 @@ void *realloc(void *ptr, size_t size)
{
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
auto sz = addrmap.find(ptr) != addrmap.end() ? addrmap[ptr].size : 0;
mem_overhead += (size - sz);
return __libc_realloc(ptr, size);
}

tfs->hook_guard = true;

Expand All @@ -296,8 +317,10 @@ void *memalign(size_t alignment, size_t size)
{
auto *tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return __libc_memalign(alignment, size);
}

tfs->hook_guard = true;

Expand All @@ -318,8 +341,10 @@ int posix_memalign(void **memptr, size_t alignment, size_t size)
if (unlikely(!real_posix_memalign))
real_posix_memalign = (PosixMemalignFunction)dlsym(RTLD_NEXT, "posix_memalign");

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return real_posix_memalign(memptr, alignment, size);
}

tfs->hook_guard = true;

Expand All @@ -338,8 +363,10 @@ void *aligned_alloc(size_t alignment, size_t size)
{
auto *tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return __aligned_alloc(alignment, size);
}

tfs->hook_guard = true;

Expand All @@ -357,8 +384,10 @@ void *pvalloc(size_t size)
{
auto *tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return __pvalloc(size);
}

tfs->hook_guard = true;

Expand All @@ -376,8 +405,10 @@ void *valloc(size_t size)
{
auto *tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
mem_overhead += size;
return __valloc(size);
}

tfs->hook_guard = true;

Expand All @@ -395,8 +426,11 @@ void *reallocarray(void *ptr, size_t nmemb, size_t size)
{
auto* tfs = &thread_flags;

if (unlikely(tfs->hook_guard || !initialized))
if (unlikely(tfs->hook_guard || !initialized)) {
auto sz = addrmap.find(ptr) != addrmap.end() ? addrmap[ptr].size : 0;
mem_overhead += (nmemb * size - sz);
return real_reallocarray(ptr, nmemb, size);
}

tfs->hook_guard = true;

Expand Down
4 changes: 3 additions & 1 deletion stacktrace.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,6 @@
#include <sstream>
#include <algorithm>
#include <vector>
#include <map>

#include <mutex>

Expand Down Expand Up @@ -275,6 +274,9 @@ static void print_dump_stackmap_footer(
get_byte_unit(minfo.uordblks).c_str());

pr_out("[heaptrace] statm info (VSS/RSS/shared) : %s\n", read_statm().c_str());

pr_out("[heaptrace] self consumed (mem overhead) : %s\n",
get_byte_unit(mem_overhead).c_str());
}

static void print_dump_stackmap(std::vector<std::pair<stack_trace_t, stack_info_t>>& sorted_stack)
Expand Down
3 changes: 3 additions & 0 deletions stacktrace.h
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@

#include <array>
#include <chrono>
#include <map>

#include "heaptrace.h"
#include "compiler.h"
Expand All @@ -32,6 +33,8 @@ struct object_info_t {
uint64_t size;
};

extern std::map<addr_t, object_info_t> addrmap;

void __record_backtrace(size_t size, void* addr,
stack_trace_t& stack_trace, int nptrs);

Expand Down