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Fixes TEST crash triggered by webrtc-codereview.appspot.com/268014.

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Review URL: http://webrtc-codereview.appspot.com/280005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@980 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
henrike@webrtc.org 2011-11-18 23:55:12 +00:00
parent 31d30700d6
commit ad98a3eed0
3 changed files with 47 additions and 11 deletions
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6
src/system_wrappers/interface/cpu_wrapper.h
View File

@ -32,6 +32,12 @@ public:
// Note that the pointer passed as cpu_usage is redirected to a local member
// of the CPU wrapper.
// numCores is the number of cores in the cpu_usage array.
// Note: on some OSs this class is initialized lazy. This means that it
// might not yet be possible to retrieve any CPU metrics. When this happens
// the return value will be zero (indicating that there is not a failure),
// numCores will be 0 and cpu_usage will be set to NULL (indicating that
// no metrics are available yet). Once the initialization is completed,
// which can take in the order of seconds, CPU metrics can be retrieved.
virtual WebRtc_Word32 CpuUsageMultiCore(WebRtc_UWord32& numCores,
WebRtc_UWord32*& cpu_usage) = 0;

12
src/system_wrappers/source/cpu_windows.cc
View File

@ -35,11 +35,18 @@ WebRtc_Word32 CpuWindows::CpuUsage()
}
WebRtc_Word32 CpuWindows::CpuUsageMultiCore(WebRtc_UWord32& num_cores,
WebRtc_UWord32*& cpu_usage)
WebRtc_UWord32*& cpu_usage)
{
if (has_terminated_) {
num_cores = 0;
cpu_usage = NULL;
return -1;
}
if (!has_initialized_)
{
return -1;
num_cores = 0;
cpu_usage = NULL;
return 0;
}
num_cores = number_of_objects_ - 1;
cpu_usage = cpu_usage_;
@ -140,6 +147,7 @@ void CpuWindows::StartPollingCpu()
if (!cpu_polling_thread->Start(dummy_id))
{
initialize_ = false;
has_terminated_ = true;
assert(false);
}
}

40
src/system_wrappers/source/cpu_wrapper_unittest.cc
View File

@ -12,6 +12,7 @@
#include "gtest/gtest.h"
#include "system_wrappers/interface/cpu_info.h"
#include "system_wrappers/interface/event_wrapper.h"
#include "system_wrappers/interface/trace.h"
using webrtc::CpuInfo;
@ -28,18 +29,39 @@ TEST(CpuWrapperTest, Usage) {
Trace::SetLevelFilter(webrtc::kTraceAll);
printf("Number of cores detected:%u\n", CpuInfo::DetectNumberOfCores());
CpuWrapper* cpu = CpuWrapper::CreateCpu();
WebRtc_UWord32 numCores;
WebRtc_UWord32* cores;
for (int i = 0; i < 10; i++) {
WebRtc_Word32 total = cpu->CpuUsageMultiCore(numCores, cores);
ASSERT_TRUE(cpu != NULL);
webrtc::EventWrapper* sleep_event = webrtc::EventWrapper::Create();
ASSERT_TRUE(sleep_event != NULL);
printf("\nNumCores:%d\n", numCores);
printf("Total cpu:%d\n", total);
for (WebRtc_UWord32 i = 0; i < numCores; i++) {
printf("Core:%u CPU:%u \n", i, cores[i]);
int num_iterations = 0;
WebRtc_UWord32 num_cores = 0;
WebRtc_UWord32* cores = NULL;
bool cpu_usage_available = cpu->CpuUsageMultiCore(num_cores, cores) != -1;
// Initializing the CPU measurements may take a couple of seconds on Windows.
// Since the initialization is lazy we need to wait until it is completed.
// Should not take more than 10000 ms.
while (cpu_usage_available && (++num_iterations < 10000)) {
if (cores != NULL) {
ASSERT_GT(num_cores, 0);
break;
}
sleep_event->Wait(1);
cpu_usage_available = cpu->CpuUsageMultiCore(num_cores, cores) != -1;
}
ASSERT_TRUE(cpu_usage_available);
const WebRtc_Word32 total = cpu->CpuUsageMultiCore(num_cores, cores);
ASSERT_TRUE(cores != NULL);
EXPECT_GT(num_cores, 0);
EXPECT_GE(total, 0);
printf("\nNumCores:%d\n", num_cores);
printf("Total cpu:%d\n", total);
for (WebRtc_UWord32 i = 0; i < num_cores; i++) {
printf("Core:%u CPU:%u \n", i, cores[i]);
EXPECT_LE(cores[i], total);
}
delete cpu;
Trace::ReturnTrace();
};