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#include <library/cpp/malloc/api/malloc.h>
using namespace NMalloc;
#if defined(_MSC_VER)
TMallocInfo NMalloc::MallocInfo() {
TMallocInfo r;
r.Name = "jemalloc";
return r;
}
#else
#include <strings.h>
#include <stdlib.h>
#include <inttypes.h>
#include <contrib/libs/jemalloc/include/jemalloc/jemalloc.h>
namespace {
bool JESetParam(const char* param, const char* value) {
if (param) {
if (strcmp(param, "j:reset_epoch") == 0) {
uint64_t epoch = 1;
size_t sz = sizeof(epoch);
mallctl("epoch", &epoch, &sz, &epoch, sz);
return true;
}
if (strcmp(param, "j:prof") == 0) {
if (strcmp(value, "start") == 0) {
bool is_active = true;
const int ret = mallctl("prof.active", nullptr, nullptr, &is_active, sizeof(is_active));
return ret == 0;
}
if (strcmp(value, "stop") == 0) {
bool is_active = false;
const int ret = mallctl("prof.active", nullptr, nullptr, &is_active, sizeof(is_active));
return ret == 0;
}
if (strcmp(value, "dump") == 0) {
const int ret = mallctl("prof.dump", nullptr, nullptr, nullptr, 0);
return ret == 0;
}
}
if (strcmp(param, "j:bg_threads") == 0) {
if (strcmp(value, "start") == 0) {
bool is_active = true;
const int ret = mallctl("background_thread", nullptr, nullptr, &is_active, sizeof(is_active));
return ret == 0;
}
if (strcmp(value, "stop") == 0) {
bool is_active = false;
// NOTE: joins bg thread
const int ret = mallctl("background_thread", nullptr, nullptr, &is_active, sizeof(is_active));
return ret == 0;
}
if (strncmp(value, "max=", 4) == 0) {
int num_value = atoi(value + 4);
if (num_value <= 0) {
return false;
}
size_t max_threads = num_value;
const int ret = mallctl("max_background_threads", nullptr, nullptr, &max_threads, sizeof(max_threads));
return ret == 0;
}
}
return false;
}
return false;
}
const char* JEGetParam(const char* param) {
if (param) {
if (strcmp(param, "allocated") == 0) {
JESetParam("j:reset_epoch", nullptr);
size_t allocated = 0;
size_t sz = sizeof(allocated);
mallctl("stats.allocated", &allocated, &sz, nullptr, 0);
static_assert(sizeof(size_t) == sizeof(void*), "fix me");
return (const char*)(void*)allocated;
} else if (strcmp(param, "j:stats_print_func") == 0) {
return (const char*)&malloc_stats_print;
}
return nullptr;
}
return nullptr;
}
}
TMallocInfo NMalloc::MallocInfo() {
TMallocInfo r;
r.Name = "jemalloc";
r.SetParam = JESetParam;
r.GetParam = JEGetParam;
return r;
}
#endif
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