platform_bionic/libc/bionic/pthread_getcpuclockid.cpp
Elliott Hughes 5bb113cba2 Pass caller names to __pthread_internal_find for better errors.
On http://b/122082295 we had this abort:

  12-27 15:29:31.237 10222 10814 10848 F libc    : invalid pthread_t 0xb1907960 passed to libc

This wasn't super helpful. We can do better. Now you get something like
this instead:

  03-27 02:34:58.754 25329 25329 W libc    : invalid pthread_t (0) passed to pthread_join

Test: adb shell crasher
Bug: http://b/123255692
Change-Id: I1d545665a233308480cc3747ec3120e2b6de0453
2019-02-01 16:31:10 -08:00

46 lines
1.9 KiB
C++

/*
* Copyright (C) 2008 The Android Open Source Project
* 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.
*
* 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.
*/
#include <errno.h>
#include "pthread_internal.h"
int pthread_getcpuclockid(pthread_t t, clockid_t* clockid) {
pid_t tid = __pthread_internal_gettid(t, "pthread_getcpuclockid");
if (tid == -1) return ESRCH;
// The tid is stored in the top bits, but negated.
clockid_t result = ~static_cast<clockid_t>(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;
}