diff options
Diffstat (limited to 'chrome/test/perf/mem_usage.h')
| -rw-r--r-- | chrome/test/perf/mem_usage.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/chrome/test/perf/mem_usage.h b/chrome/test/perf/mem_usage.h new file mode 100644 index 0000000..940a0d1 --- /dev/null +++ b/chrome/test/perf/mem_usage.h @@ -0,0 +1,64 @@ +// Copyright 2008, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef CHROME_TEST_PERF_MEM_USAGE_H__ +#define CHROME_TEST_PERF_MEM_USAGE_H__ + +// Get memory information for the process with given process ID. +// +// The Windows psapi provides memory information of a process through structure +// RPROCESS_MEMORY_COUNTERS_EX. Relevant fields are: +// PagefileUsage: private (not shared) committed virtual space in process. +// This is "VM Size" in task manager processes tab. +// PeakPagefileUsage: peak value of PagefileUsage. +// WorkingSetSize: physical memory allocated to process including shared pages. +// This is "Memory Usage" in task manager processes tab. +// Contrary to its name, this value is not much useful for +// tracking the memory demand of an application. +// PeakWorkingSetSize: peak value of WorkingSetSize. +// This is "Peak Memory Usage" in task manager processes +// tab. +// PrivateUsage: The current amount of memory that cannot be shared with other +// processes. Private bytes include memory that is committed and +// marked MEM_PRIVATE, data that is not mapped, and executable +// pages that have been written to. It usually gives the same +// value as PagefileUsage. No equivalent part in task manager. +// +// The measurements we use are PagefileUsage (returned by current_virtual_size) +// and PeakPagefileUsage (returned by peak_virtual_size), Working Set and +// Peak working Set. +bool GetMemoryInfo(uint32 process_id, + size_t *peak_virtual_size, + size_t *current_virtual_size, + size_t *peak_working_set_size, + size_t *current_working_set_size); + +// Get and print memory usage information for running chrome processes. +void PrintChromeMemoryUsageInfo(); +#endif // CHROME_TEST_PERF_MEM_USAGE_H__ |