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-rw-r--r--absl/base/internal/low_level_alloc.cc71
-rw-r--r--absl/debugging/failure_signal_handler.cc21
-rw-r--r--absl/debugging/internal/examine_stack.cc3
-rw-r--r--absl/debugging/internal/stack_consumption.cc7
-rw-r--r--absl/debugging/symbolize_test.cc38
5 files changed, 67 insertions, 73 deletions
diff --git a/absl/base/internal/low_level_alloc.cc b/absl/base/internal/low_level_alloc.cc
index 445c3458..6d2cfeac 100644
--- a/absl/base/internal/low_level_alloc.cc
+++ b/absl/base/internal/low_level_alloc.cc
@@ -47,24 +47,20 @@
#endif
#include <string.h>
+
#include <algorithm>
#include <atomic>
#include <cerrno>
#include <cstddef>
-#include <new> // for placement-new
+#include <new> // for placement-new
#include "absl/base/dynamic_annotations.h"
#include "absl/base/internal/raw_logging.h"
#include "absl/base/internal/spinlock.h"
-// MAP_ANONYMOUS
-#if defined(__APPLE__) || defined(__hexagon__)
-// For mmap, Linux defines both MAP_ANONYMOUS and MAP_ANON and says MAP_ANON is
-// deprecated. In Darwin, MAP_ANON is all there is.
-#if !defined MAP_ANONYMOUS
+#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
#define MAP_ANONYMOUS MAP_ANON
-#endif // !MAP_ANONYMOUS
-#endif // __APPLE__
+#endif
namespace absl {
ABSL_NAMESPACE_BEGIN
@@ -126,7 +122,7 @@ static int IntLog2(size_t size, size_t base) {
static int Random(uint32_t *state) {
uint32_t r = *state;
int result = 1;
- while ((((r = r*1103515245 + 12345) >> 30) & 1) == 0) {
+ while ((((r = r * 1103515245 + 12345) >> 30) & 1) == 0) {
result++;
}
*state = r;
@@ -148,7 +144,7 @@ static int LLA_SkiplistLevels(size_t size, size_t base, uint32_t *random) {
size_t max_fit = (size - offsetof(AllocList, next)) / sizeof(AllocList *);
int level = IntLog2(size, base) + (random != nullptr ? Random(random) : 1);
if (static_cast<size_t>(level) > max_fit) level = static_cast<int>(max_fit);
- if (level > kMaxLevel-1) level = kMaxLevel - 1;
+ if (level > kMaxLevel - 1) level = kMaxLevel - 1;
ABSL_RAW_CHECK(level >= 1, "block not big enough for even one level");
return level;
}
@@ -157,8 +153,8 @@ static int LLA_SkiplistLevels(size_t size, size_t base, uint32_t *random) {
// For 0 <= i < head->levels, set prev[i] to "no_greater", where no_greater
// points to the last element at level i in the AllocList less than *e, or is
// head if no such element exists.
-static AllocList *LLA_SkiplistSearch(AllocList *head,
- AllocList *e, AllocList **prev) {
+static AllocList *LLA_SkiplistSearch(AllocList *head, AllocList *e,
+ AllocList **prev) {
AllocList *p = head;
for (int level = head->levels - 1; level >= 0; level--) {
for (AllocList *n; (n = p->next[level]) != nullptr && n < e; p = n) {
@@ -194,7 +190,7 @@ static void LLA_SkiplistDelete(AllocList *head, AllocList *e,
prev[i]->next[i] = e->next[i];
}
while (head->levels > 0 && head->next[head->levels - 1] == nullptr) {
- head->levels--; // reduce head->levels if level unused
+ head->levels--; // reduce head->levels if level unused
}
}
@@ -253,9 +249,9 @@ void CreateGlobalArenas() {
// Returns a global arena that does not call into hooks. Used by NewArena()
// when kCallMallocHook is not set.
-LowLevelAlloc::Arena* UnhookedArena() {
+LowLevelAlloc::Arena *UnhookedArena() {
base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
- return reinterpret_cast<LowLevelAlloc::Arena*>(&unhooked_arena_storage);
+ return reinterpret_cast<LowLevelAlloc::Arena *>(&unhooked_arena_storage);
}
#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
@@ -273,7 +269,7 @@ LowLevelAlloc::Arena *UnhookedAsyncSigSafeArena() {
// Returns the default arena, as used by LowLevelAlloc::Alloc() and friends.
LowLevelAlloc::Arena *LowLevelAlloc::DefaultArena() {
base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
- return reinterpret_cast<LowLevelAlloc::Arena*>(&default_arena_storage);
+ return reinterpret_cast<LowLevelAlloc::Arena *>(&default_arena_storage);
}
// magic numbers to identify allocated and unallocated blocks
@@ -360,8 +356,7 @@ LowLevelAlloc::Arena::Arena(uint32_t flags_value)
min_size(2 * round_up),
random(0) {
freelist.header.size = 0;
- freelist.header.magic =
- Magic(kMagicUnallocated, &freelist.header);
+ freelist.header.magic = Magic(kMagicUnallocated, &freelist.header);
freelist.header.arena = this;
freelist.levels = 0;
memset(freelist.next, 0, sizeof(freelist.next));
@@ -379,7 +374,7 @@ LowLevelAlloc::Arena *LowLevelAlloc::NewArena(uint32_t flags) {
meta_data_arena = UnhookedArena();
}
Arena *result =
- new (AllocWithArena(sizeof (*result), meta_data_arena)) Arena(flags);
+ new (AllocWithArena(sizeof(*result), meta_data_arena)) Arena(flags);
return result;
}
@@ -484,8 +479,8 @@ static void Coalesce(AllocList *a) {
AllocList *prev[kMaxLevel];
LLA_SkiplistDelete(&arena->freelist, n, prev);
LLA_SkiplistDelete(&arena->freelist, a, prev);
- a->levels = LLA_SkiplistLevels(a->header.size, arena->min_size,
- &arena->random);
+ a->levels =
+ LLA_SkiplistLevels(a->header.size, arena->min_size, &arena->random);
LLA_SkiplistInsert(&arena->freelist, a, prev);
}
}
@@ -493,27 +488,27 @@ static void Coalesce(AllocList *a) {
// Adds block at location "v" to the free list
// L >= arena->mu
static void AddToFreelist(void *v, LowLevelAlloc::Arena *arena) {
- AllocList *f = reinterpret_cast<AllocList *>(
- reinterpret_cast<char *>(v) - sizeof (f->header));
+ AllocList *f = reinterpret_cast<AllocList *>(reinterpret_cast<char *>(v) -
+ sizeof(f->header));
ABSL_RAW_CHECK(f->header.magic == Magic(kMagicAllocated, &f->header),
"bad magic number in AddToFreelist()");
ABSL_RAW_CHECK(f->header.arena == arena,
"bad arena pointer in AddToFreelist()");
- f->levels = LLA_SkiplistLevels(f->header.size, arena->min_size,
- &arena->random);
+ f->levels =
+ LLA_SkiplistLevels(f->header.size, arena->min_size, &arena->random);
AllocList *prev[kMaxLevel];
LLA_SkiplistInsert(&arena->freelist, f, prev);
f->header.magic = Magic(kMagicUnallocated, &f->header);
- Coalesce(f); // maybe coalesce with successor
- Coalesce(prev[0]); // maybe coalesce with predecessor
+ Coalesce(f); // maybe coalesce with successor
+ Coalesce(prev[0]); // maybe coalesce with predecessor
}
// Frees storage allocated by LowLevelAlloc::Alloc().
// L < arena->mu
void LowLevelAlloc::Free(void *v) {
if (v != nullptr) {
- AllocList *f = reinterpret_cast<AllocList *>(
- reinterpret_cast<char *>(v) - sizeof (f->header));
+ AllocList *f = reinterpret_cast<AllocList *>(reinterpret_cast<char *>(v) -
+ sizeof(f->header));
LowLevelAlloc::Arena *arena = f->header.arena;
ArenaLock section(arena);
AddToFreelist(v, arena);
@@ -528,21 +523,21 @@ void LowLevelAlloc::Free(void *v) {
static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) {
void *result = nullptr;
if (request != 0) {
- AllocList *s; // will point to region that satisfies request
+ AllocList *s; // will point to region that satisfies request
ArenaLock section(arena);
// round up with header
- size_t req_rnd = RoundUp(CheckedAdd(request, sizeof (s->header)),
- arena->round_up);
- for (;;) { // loop until we find a suitable region
+ size_t req_rnd =
+ RoundUp(CheckedAdd(request, sizeof(s->header)), arena->round_up);
+ for (;;) { // loop until we find a suitable region
// find the minimum levels that a block of this size must have
int i = LLA_SkiplistLevels(req_rnd, arena->min_size, nullptr) - 1;
- if (i < arena->freelist.levels) { // potential blocks exist
+ if (i < arena->freelist.levels) { // potential blocks exist
AllocList *before = &arena->freelist; // predecessor of s
while ((s = Next(i, before, arena)) != nullptr &&
s->header.size < req_rnd) {
before = s;
}
- if (s != nullptr) { // we found a region
+ if (s != nullptr) { // we found a region
break;
}
}
@@ -596,12 +591,12 @@ static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) {
AddToFreelist(&s->levels, arena); // insert new region into free list
}
AllocList *prev[kMaxLevel];
- LLA_SkiplistDelete(&arena->freelist, s, prev); // remove from free list
+ LLA_SkiplistDelete(&arena->freelist, s, prev); // remove from free list
// s points to the first free region that's big enough
if (CheckedAdd(req_rnd, arena->min_size) <= s->header.size) {
// big enough to split
- AllocList *n = reinterpret_cast<AllocList *>
- (req_rnd + reinterpret_cast<char *>(s));
+ AllocList *n =
+ reinterpret_cast<AllocList *>(req_rnd + reinterpret_cast<char *>(s));
n->header.size = s->header.size - req_rnd;
n->header.magic = Magic(kMagicAllocated, &n->header);
n->header.arena = arena;
diff --git a/absl/debugging/failure_signal_handler.cc b/absl/debugging/failure_signal_handler.cc
index fd6a4927..992c89c3 100644
--- a/absl/debugging/failure_signal_handler.cc
+++ b/absl/debugging/failure_signal_handler.cc
@@ -31,6 +31,9 @@
#ifdef ABSL_HAVE_MMAP
#include <sys/mman.h>
+#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
+#define MAP_ANONYMOUS MAP_ANON
+#endif
#endif
#ifdef __linux__
@@ -81,10 +84,10 @@ struct FailureSignalData {
struct sigaction previous_action;
// StructSigaction is used to silence -Wmissing-field-initializers.
using StructSigaction = struct sigaction;
- #define FSD_PREVIOUS_INIT FailureSignalData::StructSigaction()
+#define FSD_PREVIOUS_INIT FailureSignalData::StructSigaction()
#else
void (*previous_handler)(int);
- #define FSD_PREVIOUS_INIT SIG_DFL
+#define FSD_PREVIOUS_INIT SIG_DFL
#endif
};
@@ -136,7 +139,7 @@ const char* FailureSignalToString(int signo) {
#ifdef ABSL_HAVE_SIGALTSTACK
static bool SetupAlternateStackOnce() {
-#if defined(__wasm__) || defined (__asjms__)
+#if defined(__wasm__) || defined(__asjms__)
const size_t page_mask = getpagesize() - 1;
#else
const size_t page_mask = static_cast<size_t>(sysconf(_SC_PAGESIZE)) - 1;
@@ -158,9 +161,6 @@ static bool SetupAlternateStackOnce() {
#ifndef MAP_STACK
#define MAP_STACK 0
#endif
-#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
-#define MAP_ANONYMOUS MAP_ANON
-#endif
sigstk.ss_sp = mmap(nullptr, sigstk.ss_size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
if (sigstk.ss_sp == MAP_FAILED) {
@@ -248,7 +248,7 @@ static void WriteSignalMessage(int signo, int cpu,
if (signal_string != nullptr && signal_string[0] != '\0') {
snprintf(buf, sizeof(buf), "*** %s received at time=%ld%s ***\n",
signal_string,
- static_cast<long>(time(nullptr)), // NOLINT(runtime/int)
+ static_cast<long>(time(nullptr)), // NOLINT(runtime/int)
on_cpu);
} else {
snprintf(buf, sizeof(buf), "*** Signal %d received at time=%ld%s ***\n",
@@ -311,7 +311,8 @@ static void PortableSleepForSeconds(int seconds) {
struct timespec sleep_time;
sleep_time.tv_sec = seconds;
sleep_time.tv_nsec = 0;
- while (nanosleep(&sleep_time, &sleep_time) != 0 && errno == EINTR) {}
+ while (nanosleep(&sleep_time, &sleep_time) != 0 && errno == EINTR) {
+ }
#endif
}
@@ -321,9 +322,7 @@ static void PortableSleepForSeconds(int seconds) {
// set amount of time. If AbslFailureSignalHandler() hangs for more than
// the alarm timeout, ImmediateAbortSignalHandler() will abort the
// program.
-static void ImmediateAbortSignalHandler(int) {
- RaiseToDefaultHandler(SIGABRT);
-}
+static void ImmediateAbortSignalHandler(int) { RaiseToDefaultHandler(SIGABRT); }
#endif
// absl::base_internal::GetTID() returns pid_t on most platforms, but
diff --git a/absl/debugging/internal/examine_stack.cc b/absl/debugging/internal/examine_stack.cc
index 57863228..3dd6ba1a 100644
--- a/absl/debugging/internal/examine_stack.cc
+++ b/absl/debugging/internal/examine_stack.cc
@@ -24,6 +24,9 @@
#ifdef ABSL_HAVE_MMAP
#include <sys/mman.h>
+#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
+#define MAP_ANONYMOUS MAP_ANON
+#endif
#endif
#if defined(__linux__) || defined(__APPLE__)
diff --git a/absl/debugging/internal/stack_consumption.cc b/absl/debugging/internal/stack_consumption.cc
index 6d974992..3f40beac 100644
--- a/absl/debugging/internal/stack_consumption.cc
+++ b/absl/debugging/internal/stack_consumption.cc
@@ -18,14 +18,17 @@
#ifdef ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION
#include <signal.h>
+#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
-#include <string.h>
-
#include "absl/base/attributes.h"
#include "absl/base/internal/raw_logging.h"
+#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace debugging_internal {
diff --git a/absl/debugging/symbolize_test.cc b/absl/debugging/symbolize_test.cc
index 922fe36f..d0feab2f 100644
--- a/absl/debugging/symbolize_test.cc
+++ b/absl/debugging/symbolize_test.cc
@@ -40,6 +40,10 @@
#include "absl/memory/memory.h"
#include "absl/strings/string_view.h"
+#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
using testing::Contains;
#ifdef _WIN32
@@ -86,21 +90,13 @@ int ABSL_ATTRIBUTE_SECTION_VARIABLE(.text.unlikely) unlikely_func() {
return 0;
}
-int ABSL_ATTRIBUTE_SECTION_VARIABLE(.text.hot) hot_func() {
- return 0;
-}
+int ABSL_ATTRIBUTE_SECTION_VARIABLE(.text.hot) hot_func() { return 0; }
-int ABSL_ATTRIBUTE_SECTION_VARIABLE(.text.startup) startup_func() {
- return 0;
-}
+int ABSL_ATTRIBUTE_SECTION_VARIABLE(.text.startup) startup_func() { return 0; }
-int ABSL_ATTRIBUTE_SECTION_VARIABLE(.text.exit) exit_func() {
- return 0;
-}
+int ABSL_ATTRIBUTE_SECTION_VARIABLE(.text.exit) exit_func() { return 0; }
-int /*ABSL_ATTRIBUTE_SECTION_VARIABLE(.text)*/ regular_func() {
- return 0;
-}
+int /*ABSL_ATTRIBUTE_SECTION_VARIABLE(.text)*/ regular_func() { return 0; }
// Thread-local data may confuse the symbolizer, ensure that it does not.
// Variable sizes and order are important.
@@ -121,7 +117,7 @@ static volatile bool volatile_bool = false;
// Force the binary to be large enough that a THP .text remap will succeed.
static constexpr size_t kHpageSize = 1 << 21;
const char kHpageTextPadding[kHpageSize * 4] ABSL_ATTRIBUTE_SECTION_VARIABLE(
- .text) = "";
+ .text) = "";
#else
static void *GetPCFromFnPtr(void *ptr) {
@@ -313,10 +309,8 @@ TEST(Symbolize, SymbolizeWithDemanglingStackConsumption) {
const size_t kPageSize = 64 << 10;
// We place a read-only symbols into the .text section and verify that we can
// symbolize them and other symbols after remapping them.
-const char kPadding0[kPageSize * 4] ABSL_ATTRIBUTE_SECTION_VARIABLE(.text) =
- "";
-const char kPadding1[kPageSize * 4] ABSL_ATTRIBUTE_SECTION_VARIABLE(.text) =
- "";
+const char kPadding0[kPageSize * 4] ABSL_ATTRIBUTE_SECTION_VARIABLE(.text) = "";
+const char kPadding1[kPageSize * 4] ABSL_ATTRIBUTE_SECTION_VARIABLE(.text) = "";
static int FilterElfHeader(struct dl_phdr_info *info, size_t size, void *data) {
for (int i = 0; i < info->dlpi_phnum; i++) {
@@ -474,9 +468,9 @@ extern "C" {
inline void *ABSL_ATTRIBUTE_ALWAYS_INLINE inline_func() {
void *pc = nullptr;
#if defined(__i386__)
- __asm__ __volatile__("call 1f;\n 1: pop %[PC]" : [ PC ] "=r"(pc));
+ __asm__ __volatile__("call 1f;\n 1: pop %[PC]" : [PC] "=r"(pc));
#elif defined(__x86_64__)
- __asm__ __volatile__("leaq 0(%%rip),%[PC];\n" : [ PC ] "=r"(pc));
+ __asm__ __volatile__("leaq 0(%%rip),%[PC];\n" : [PC] "=r"(pc));
#endif
return pc;
}
@@ -484,9 +478,9 @@ inline void *ABSL_ATTRIBUTE_ALWAYS_INLINE inline_func() {
void *ABSL_ATTRIBUTE_NOINLINE non_inline_func() {
void *pc = nullptr;
#if defined(__i386__)
- __asm__ __volatile__("call 1f;\n 1: pop %[PC]" : [ PC ] "=r"(pc));
+ __asm__ __volatile__("call 1f;\n 1: pop %[PC]" : [PC] "=r"(pc));
#elif defined(__x86_64__)
- __asm__ __volatile__("leaq 0(%%rip),%[PC];\n" : [ PC ] "=r"(pc));
+ __asm__ __volatile__("leaq 0(%%rip),%[PC];\n" : [PC] "=r"(pc));
#endif
return pc;
}
@@ -601,7 +595,7 @@ TEST(Symbolize, SymbolizeWithDemangling) {
}
#endif // !defined(ABSL_CONSUME_DLL)
-#else // Symbolizer unimplemented
+#else // Symbolizer unimplemented
TEST(Symbolize, Unimplemented) {
char buf[64];
EXPECT_FALSE(absl::Symbolize((void *)(&nonstatic_func), buf, sizeof(buf)));
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 13:16:41 +0000