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106 lines
3.9 KiB
C++
106 lines
3.9 KiB
C++
// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
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/* Copyright (c) 2005, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ---
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* Author: Sanjay Ghemawat
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*
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* Module for heap-profiling.
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*
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* For full(er) information, see doc/heapprofile.html
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*
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* This module can be linked into your program with
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* no slowdown caused by this unless you activate the profiler
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* using one of the following methods:
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*
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* 1. Before starting the program, set the environment variable
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* "HEAPPROFILE" to be the name of the file to which the profile
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* data should be written.
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*
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* 2. Programmatically, start and stop the profiler using the
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* routines "HeapProfilerStart(filename)" and "HeapProfilerStop()".
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*
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*/
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#ifndef BASE_HEAP_PROFILER_H_
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#define BASE_HEAP_PROFILER_H_
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#include <stddef.h>
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/* Annoying stuff for windows; makes sure clients can import these functions */
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#ifndef PERFTOOLS_DLL_DECL
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# ifdef _WIN32
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# define PERFTOOLS_DLL_DECL __declspec(dllimport)
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# else
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# define PERFTOOLS_DLL_DECL
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# endif
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#endif
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/* All this code should be usable from within C apps. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Start profiling and arrange to write profile data to file names
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* of the form: "prefix.0000", "prefix.0001", ...
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*/
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PERFTOOLS_DLL_DECL void HeapProfilerStart(const char* prefix);
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/* Returns non-zero if we are currently profiling the heap. (Returns
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* an int rather than a bool so it's usable from C.) This is true
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* between calls to HeapProfilerStart() and HeapProfilerStop(), and
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* also if the program has been run with HEAPPROFILER, or some other
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* way to turn on whole-program profiling.
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*/
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int IsHeapProfilerRunning();
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/* Stop heap profiling. Can be restarted again with HeapProfilerStart(),
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* but the currently accumulated profiling information will be cleared.
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*/
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PERFTOOLS_DLL_DECL void HeapProfilerStop();
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/* Dump a profile now - can be used for dumping at a hopefully
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* quiescent state in your program, in order to more easily track down
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* memory leaks. Will include the reason in the logged message
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*/
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PERFTOOLS_DLL_DECL void HeapProfilerDump(const char *reason);
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/* Generate current heap profiling information.
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* Returns an empty string when heap profiling is not active.
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* The returned pointer is a '\0'-terminated string allocated using malloc()
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* and should be free()-ed as soon as the caller does not need it anymore.
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*/
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PERFTOOLS_DLL_DECL char* GetHeapProfile();
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif /* BASE_HEAP_PROFILER_H_ */
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