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authorGravatar Abseil Team <absl-team@google.com>2020-07-28 14:05:57 -0700
committerGravatar Mark Barolak <mbar@google.com>2020-07-29 14:05:23 -0400
commit82302f1e05d6daed93bdd77e8951b529b0ebfcf6 (patch)
tree04fed331c398f9dc6880522f3698487fe09ecff3 /absl/debugging
parentdea76486cb76c7e1032a5efc15b43538b7c5ce50 (diff)
Export of internal Abseil changes
-- 41ac0d9b32618a1df717984afcb808858089bda7 by Derek Mauro <dmauro@google.com>: Removes usages of deprecated RunningOnValgrind PiperOrigin-RevId: 323649256 -- 5453d131af475b434dcd86ab326e4a2cf780857f by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 323630307 GitOrigin-RevId: 41ac0d9b32618a1df717984afcb808858089bda7 Change-Id: I523016e0ecdb8d141aa069ad2846f5e4abbe014c
Diffstat (limited to 'absl/debugging')
-rw-r--r--absl/debugging/internal/symbolize.h14
-rw-r--r--absl/debugging/internal/vdso_support.cc9
-rw-r--r--absl/debugging/symbolize_elf.inc7
3 files changed, 21 insertions, 9 deletions
diff --git a/absl/debugging/internal/symbolize.h b/absl/debugging/internal/symbolize.h
index 663d774d..b3729af7 100644
--- a/absl/debugging/internal/symbolize.h
+++ b/absl/debugging/internal/symbolize.h
@@ -18,6 +18,8 @@
#ifndef ABSL_DEBUGGING_INTERNAL_SYMBOLIZE_H_
#define ABSL_DEBUGGING_INTERNAL_SYMBOLIZE_H_
+#ifdef __cplusplus
+
#include <cstddef>
#include <cstdint>
@@ -132,4 +134,16 @@ bool GetFileMappingHint(const void** start,
ABSL_NAMESPACE_END
} // namespace absl
+#endif // __cplusplus
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+#endif // __cplusplus
+
+ bool
+ AbslInternalGetFileMappingHint(const void** start, const void** end,
+ uint64_t* offset, const char** filename);
+
#endif // ABSL_DEBUGGING_INTERNAL_SYMBOLIZE_H_
diff --git a/absl/debugging/internal/vdso_support.cc b/absl/debugging/internal/vdso_support.cc
index 19deb3cf..6be16d90 100644
--- a/absl/debugging/internal/vdso_support.cc
+++ b/absl/debugging/internal/vdso_support.cc
@@ -76,15 +76,6 @@ const void *VDSOSupport::Init() {
}
#endif // __GLIBC_PREREQ(2, 16)
if (vdso_base_.load(std::memory_order_relaxed) == kInvalidBase) {
- // Valgrind zaps AT_SYSINFO_EHDR and friends from the auxv[]
- // on stack, and so glibc works as if VDSO was not present.
- // But going directly to kernel via /proc/self/auxv below bypasses
- // Valgrind zapping. So we check for Valgrind separately.
- if (RunningOnValgrind()) {
- vdso_base_.store(nullptr, std::memory_order_relaxed);
- getcpu_fn_.store(&GetCPUViaSyscall, std::memory_order_relaxed);
- return nullptr;
- }
int fd = open("/proc/self/auxv", O_RDONLY);
if (fd == -1) {
// Kernel too old to have a VDSO.
diff --git a/absl/debugging/symbolize_elf.inc b/absl/debugging/symbolize_elf.inc
index 2f97cc7e..7c36fd13 100644
--- a/absl/debugging/symbolize_elf.inc
+++ b/absl/debugging/symbolize_elf.inc
@@ -1551,3 +1551,10 @@ bool Symbolize(const void *pc, char *out, int out_size) {
ABSL_NAMESPACE_END
} // namespace absl
+
+extern "C" bool AbslInternalGetFileMappingHint(const void **start,
+ const void **end, uint64_t *offset,
+ const char **filename) {
+ return absl::debugging_internal::GetFileMappingHint(start, end, offset,
+ filename);
+}