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Merge "Fix pthread_getcpuclockid."

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Elliott Hughes 2013-08-15 22:34:58 +00:00 committed by Gerrit Code Review
commit 4eacb34132
3 changed files with 19 additions and 3 deletions
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10
libc/bionic/pthread_getcpuclockid.cpp
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@ -36,7 +36,13 @@ int pthread_getcpuclockid(pthread_t t, clockid_t* clockid) {
return ESRCH;
}
enum { CLOCK_IDTYPE_BITS = 3 };
*clockid = CLOCK_THREAD_CPUTIME_ID | (thread->tid << CLOCK_IDTYPE_BITS);
// The tid is stored in the top bits, but negated.
clockid_t result = ~static_cast<clockid_t>(thread->tid) << 3;
// Bits 0 and 1: clock type (0 = CPUCLOCK_PROF, 1 = CPUCLOCK_VIRT, 2 = CPUCLOCK_SCHED).
result |= 2;
// Bit 2: thread (set) or process (clear)?
result |= (1 << 2);
*clockid = result;
return 0;
}

2
tests/Android.mk
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@ -157,7 +157,7 @@ include $(CLEAR_VARS)
LOCAL_MODULE := bionic-unit-tests-glibc
LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
LOCAL_CFLAGS += $(test_c_flags)
LOCAL_LDFLAGS += -lpthread -ldl
LOCAL_LDFLAGS += -lpthread -ldl -lrt
LOCAL_LDFLAGS += $(test_dynamic_ldflags)
LOCAL_SRC_FILES := $(test_src_files) $(test_dynamic_src_files)
LOCAL_STATIC_LIBRARIES += bionic-unit-tests-unwind-test-impl-host

10
tests/pthread_test.cpp
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@ -278,6 +278,16 @@ TEST(pthread, pthread_detach__no_such_thread) {
ASSERT_EQ(ESRCH, pthread_detach(dead_thread));
}
TEST(pthread, pthread_getcpuclockid__clock_gettime) {
pthread_t t;
ASSERT_EQ(0, pthread_create(&t, NULL, SleepFn, reinterpret_cast<void*>(5)));
clockid_t c;
ASSERT_EQ(0, pthread_getcpuclockid(t, &c));
timespec ts;
ASSERT_EQ(0, clock_gettime(c, &ts));
}
TEST(pthread, pthread_getcpuclockid__no_such_thread) {
pthread_t dead_thread;
MakeDeadThread(dead_thread);