2979162732
This patch is by Simone Atzeni with portions by Adhemerval Zanella. This contains the LLVM patches to enable the thread sanitizer for PPC64, both big- and little-endian. Two different virtual memory sizes are supported: Old kernels use a 44-bit address space, while newer kernels require a 46-bit address space. There are two companion patches that will be added shortly. There is a Clang patch to actually turn on the use of the thread sanitizer for PPC64. There is also a patch that I wrote to provide interceptor support for setjmp/longjmp on PPC64. Patch discussion at reviews.llvm.org/D12841. llvm-svn: 255057
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
#include <pthread.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <dlfcn.h>
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#include <stddef.h>
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#include <sched.h>
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#include <stdarg.h>
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#ifdef __APPLE__
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#include <mach/mach_time.h>
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#endif
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// TSan-invisible barrier.
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// Tests use it to establish necessary execution order in a way that does not
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// interfere with tsan (does not establish synchronization between threads).
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typedef unsigned long long invisible_barrier_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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void __tsan_testonly_barrier_init(invisible_barrier_t *barrier,
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unsigned count);
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void __tsan_testonly_barrier_wait(invisible_barrier_t *barrier);
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#ifdef __cplusplus
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}
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#endif
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static inline void barrier_init(invisible_barrier_t *barrier, unsigned count) {
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__tsan_testonly_barrier_init(barrier, count);
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}
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static inline void barrier_wait(invisible_barrier_t *barrier) {
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__tsan_testonly_barrier_wait(barrier);
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}
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// Default instance of the barrier, but a test can declare more manually.
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invisible_barrier_t barrier;
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void print_address(const char *str, int n, ...) {
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fprintf(stderr, "%s", str);
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va_list ap;
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va_start(ap, n);
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while (n--) {
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void *p = va_arg(ap, void *);
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#if defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__)
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// On FreeBSD, the %p conversion specifier works as 0x%x and thus does not
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// match to the format used in the diagnotic message.
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fprintf(stderr, "0x%012lx ", (unsigned long) p);
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#elif defined(__mips64)
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fprintf(stderr, "0x%010lx ", (unsigned long) p);
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#endif
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}
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fprintf(stderr, "\n");
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}
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#ifdef __APPLE__
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unsigned long long monotonic_clock_ns() {
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static mach_timebase_info_data_t timebase_info;
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if (timebase_info.denom == 0) mach_timebase_info(&timebase_info);
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return (mach_absolute_time() * timebase_info.numer) / timebase_info.denom;
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}
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#else
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unsigned long long monotonic_clock_ns() {
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struct timespec t;
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clock_gettime(CLOCK_MONOTONIC, &t);
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return (unsigned long long)t.tv_sec * 1000000000ull + t.tv_nsec;
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}
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#endif
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