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/*******************************************************************************
* Copyright 2019 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
#include <mutex>
#include "utils.hpp"
#ifndef MKLDNN_ENABLE_JIT_PROFILING
#define MKLDNN_ENABLE_JIT_PROFILING 1
#endif
#ifndef MKLDNN_ENABLE_JIT_DUMP
#define MKLDNN_ENABLE_JIT_DUMP 1
#endif
#if MKLDNN_ENABLE_JIT_PROFILING
#include "jitprofiling/jitprofiling.h"
#endif
namespace mkldnn {
namespace impl {
namespace cpu {
namespace jit_utils {
// WARNING: These functions are not thread safe and must be protected by a
// mutex
void dump_jit_code(const void *code, size_t code_size, const char *code_name)
{
#if MKLDNN_ENABLE_JIT_DUMP
if (code && jit_dump_enabled()) {
static int counter = 0;
#define MAX_FNAME_LEN 256
char fname[MAX_FNAME_LEN + 1];
// TODO (Roma): support prefix for code / linux perf dumps
snprintf(fname, MAX_FNAME_LEN, "mkldnn_dump_%s.%d.bin", code_name,
counter);
counter++;
FILE *fp = fopen(fname, "w+");
// Failure to dump code is not fatal
if (fp) {
size_t unused = fwrite(code, code_size, 1, fp);
UNUSED(unused);
fclose(fp);
}
}
#undef MAX_FNAME_LEN
#else
UNUSED(code);
UNUSED(code_size);
UNUSED(code_name);
#endif
}
void register_jit_code_vtune(const void *code, size_t code_size,
const char *code_name, const char *source_file_name)
{
#if MKLDNN_ENABLE_JIT_PROFILING
if (iJIT_IsProfilingActive() == iJIT_SAMPLING_ON) {
auto jmethod = iJIT_Method_Load();
jmethod.method_id = iJIT_GetNewMethodID(); // XXX: not thread-safe
jmethod.method_name = (char *)code_name; // XXX: dropping const
jmethod.class_file_name = NULL;
jmethod.source_file_name = (char *)source_file_name; // XXX: dropping const
jmethod.method_load_address = (void *)code;
jmethod.method_size = (unsigned int)code_size;
iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED,
(void*)&jmethod);
}
#else
UNUSED(code);
UNUSED(code_size);
UNUSED(code_name);
UNUSED(source_file_name);
#endif
}
void register_jit_code(const void *code, size_t code_size,
const char *code_name, const char *source_file_name)
{
// The #ifdef guards are required to avoid generating a function that only
// consists of lock and unlock code
#if MKLDNN_ENABLE_JIT_PROFILING || MKLDNN_ENABLE_JIT_DUMP
static std::mutex m;
std::lock_guard<std::mutex> guard(m);
dump_jit_code(code, code_size, code_name);
register_jit_code_vtune(code, code_size, code_name, source_file_name);
#else
UNUSED(code);
UNUSED(code_size);
UNUSED(code_name);
UNUSED(source_file_name);
#endif
}
}
}
}
}
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