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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/process_util.h" | 5 #include "base/process_util.h" |
6 | 6 |
7 #import <Cocoa/Cocoa.h> | 7 #import <Cocoa/Cocoa.h> |
8 #include <crt_externs.h> | 8 #include <crt_externs.h> |
9 #include <errno.h> | 9 #include <errno.h> |
10 #include <mach/mach.h> | 10 #include <mach/mach.h> |
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25 #include <string> | 25 #include <string> |
26 | 26 |
27 #include "base/debug/debugger.h" | 27 #include "base/debug/debugger.h" |
28 #include "base/file_util.h" | 28 #include "base/file_util.h" |
29 #include "base/hash_tables.h" | 29 #include "base/hash_tables.h" |
30 #include "base/lazy_instance.h" | 30 #include "base/lazy_instance.h" |
31 #include "base/logging.h" | 31 #include "base/logging.h" |
32 #include "base/mac/mac_util.h" | 32 #include "base/mac/mac_util.h" |
33 #include "base/mac/scoped_mach_port.h" | 33 #include "base/mac/scoped_mach_port.h" |
34 #include "base/posix/eintr_wrapper.h" | 34 #include "base/posix/eintr_wrapper.h" |
| 35 #include "base/scoped_clear_errno.h" |
35 #include "base/string_util.h" | 36 #include "base/string_util.h" |
36 #include "base/sys_info.h" | 37 #include "base/sys_info.h" |
37 #include "third_party/apple_apsl/CFBase.h" | 38 #include "third_party/apple_apsl/CFBase.h" |
38 #include "third_party/apple_apsl/malloc.h" | 39 #include "third_party/apple_apsl/malloc.h" |
39 | 40 |
40 #if ARCH_CPU_32_BITS | 41 #if ARCH_CPU_32_BITS |
41 #include <dlfcn.h> | 42 #include <dlfcn.h> |
42 #include <mach-o/nlist.h> | 43 #include <mach-o/nlist.h> |
43 | 44 |
44 #include "base/threading/thread_local.h" | 45 #include "base/threading/thread_local.h" |
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539 // nlist() returns addresses as offsets in the image, not the instruction | 540 // nlist() returns addresses as offsets in the image, not the instruction |
540 // pointer in memory. Use the known in-memory address of malloc() | 541 // pointer in memory. Use the known in-memory address of malloc() |
541 // to compute the offset for malloc_error_break(). | 542 // to compute the offset for malloc_error_break(). |
542 uintptr_t reference_addr = reinterpret_cast<uintptr_t>(&malloc); | 543 uintptr_t reference_addr = reinterpret_cast<uintptr_t>(&malloc); |
543 reference_addr -= nl[1].n_value; | 544 reference_addr -= nl[1].n_value; |
544 reference_addr += nl[0].n_value; | 545 reference_addr += nl[0].n_value; |
545 | 546 |
546 return reinterpret_cast<malloc_error_break_t>(reference_addr); | 547 return reinterpret_cast<malloc_error_break_t>(reference_addr); |
547 } | 548 } |
548 | 549 |
549 // Simple scoper that saves the current value of errno, resets it to 0, and on | |
550 // destruction puts the old value back. This is so that CrMallocErrorBreak can | |
551 // safely test errno free from the effects of other routines. | |
552 class ScopedClearErrno { | |
553 public: | |
554 ScopedClearErrno() : old_errno_(errno) { | |
555 errno = 0; | |
556 } | |
557 ~ScopedClearErrno() { | |
558 if (errno == 0) | |
559 errno = old_errno_; | |
560 } | |
561 | |
562 private: | |
563 int old_errno_; | |
564 | |
565 DISALLOW_COPY_AND_ASSIGN(ScopedClearErrno); | |
566 }; | |
567 | |
568 // Combines ThreadLocalBoolean with AutoReset. It would be convenient | 550 // Combines ThreadLocalBoolean with AutoReset. It would be convenient |
569 // to compose ThreadLocalPointer<bool> with base::AutoReset<bool>, but that | 551 // to compose ThreadLocalPointer<bool> with base::AutoReset<bool>, but that |
570 // would require allocating some storage for the bool. | 552 // would require allocating some storage for the bool. |
571 class ThreadLocalBooleanAutoReset { | 553 class ThreadLocalBooleanAutoReset { |
572 public: | 554 public: |
573 ThreadLocalBooleanAutoReset(ThreadLocalBoolean* tlb, bool new_value) | 555 ThreadLocalBooleanAutoReset(ThreadLocalBoolean* tlb, bool new_value) |
574 : scoped_tlb_(tlb), | 556 : scoped_tlb_(tlb), |
575 original_value_(tlb->Get()) { | 557 original_value_(tlb->Get()) { |
576 scoped_tlb_->Set(new_value); | 558 scoped_tlb_->Set(new_value); |
577 } | 559 } |
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1342 } | 1324 } |
1343 } | 1325 } |
1344 | 1326 |
1345 } // namespace | 1327 } // namespace |
1346 | 1328 |
1347 void EnsureProcessTerminated(ProcessHandle process) { | 1329 void EnsureProcessTerminated(ProcessHandle process) { |
1348 WaitForChildToDie(process, kWaitBeforeKillSeconds); | 1330 WaitForChildToDie(process, kWaitBeforeKillSeconds); |
1349 } | 1331 } |
1350 | 1332 |
1351 } // namespace base | 1333 } // namespace base |
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