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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef BIN_SIGNAL_BLOCKER_H_ | 5 #ifndef BIN_SIGNAL_BLOCKER_H_ |
6 #define BIN_SIGNAL_BLOCKER_H_ | 6 #define BIN_SIGNAL_BLOCKER_H_ |
7 | 7 |
8 #include "platform/globals.h" | 8 #include "platform/globals.h" |
9 | 9 |
10 #if defined(TARGET_OS_WINDOWS) | 10 #if defined(TARGET_OS_WINDOWS) |
11 #error Do not include this file on Windows. | 11 #error Do not include this file on Windows. |
12 #endif | 12 #endif |
13 | 13 |
14 #include <signal.h> // NOLINT | 14 #include <signal.h> // NOLINT |
15 | 15 |
| 16 #include "platform/thread.h" |
| 17 |
16 namespace dart { | 18 namespace dart { |
17 namespace bin { | 19 namespace bin { |
18 | 20 |
19 class ThreadSignalBlocker { | 21 class ThreadSignalBlocker { |
20 public: | 22 public: |
21 explicit ThreadSignalBlocker(int sig) { | 23 explicit ThreadSignalBlocker(int sig) { |
22 sigset_t signal_mask; | 24 sigset_t signal_mask; |
23 sigemptyset(&signal_mask); | 25 sigemptyset(&signal_mask); |
24 sigaddset(&signal_mask, sig); | 26 sigaddset(&signal_mask, sig); |
25 // Add sig to signal mask. | 27 // Add sig to signal mask. |
26 int r = pthread_sigmask(SIG_BLOCK, &signal_mask, &old); | 28 int r = pthread_sigmask(SIG_BLOCK, &signal_mask, &old); |
| 29 USE(r); |
| 30 ASSERT(r == 0); |
| 31 } |
| 32 |
| 33 ThreadSignalBlocker(int sigs_count, const int sigs[]) { |
| 34 sigset_t signal_mask; |
| 35 sigemptyset(&signal_mask); |
| 36 for (int i = 0; i < sigs_count; i++) { |
| 37 sigaddset(&signal_mask, sigs[i]); |
| 38 } |
| 39 // Add sig to signal mask. |
| 40 int r = pthread_sigmask(SIG_BLOCK, &signal_mask, &old); |
| 41 USE(r); |
27 ASSERT(r == 0); | 42 ASSERT(r == 0); |
28 } | 43 } |
29 | 44 |
30 ~ThreadSignalBlocker() { | 45 ~ThreadSignalBlocker() { |
31 // Restore signal mask. | 46 // Restore signal mask. |
32 int r = pthread_sigmask(SIG_SETMASK, &old, NULL); | 47 int r = pthread_sigmask(SIG_SETMASK, &old, NULL); |
| 48 USE(r); |
33 ASSERT(r == 0); | 49 ASSERT(r == 0); |
34 } | 50 } |
35 | 51 |
36 private: | 52 private: |
37 sigset_t old; | 53 sigset_t old; |
38 }; | 54 }; |
39 | 55 |
40 | 56 |
41 #define TEMP_FAILURE_RETRY_BLOCK_SIGNALS(expression) \ | 57 #define TEMP_FAILURE_RETRY_BLOCK_SIGNALS(expression) \ |
42 ({ ThreadSignalBlocker tsb(SIGPROF); \ | 58 ({ ThreadSignalBlocker tsb(SIGPROF); \ |
43 int64_t __result; \ | 59 int64_t __result; \ |
44 do { \ | 60 do { \ |
45 __result = static_cast<int64_t>(expression); \ | 61 __result = static_cast<int64_t>(expression); \ |
46 } while (__result == -1L && errno == EINTR); \ | 62 } while (__result == -1L && errno == EINTR); \ |
47 __result; }) | 63 __result; }) |
48 | 64 |
49 #define VOID_TEMP_FAILURE_RETRY_BLOCK_SIGNALS(expression) \ | 65 #define VOID_TEMP_FAILURE_RETRY_BLOCK_SIGNALS(expression) \ |
50 (static_cast<void>(TEMP_FAILURE_RETRY_BLOCK_SIGNALS(expression))) | 66 (static_cast<void>(TEMP_FAILURE_RETRY_BLOCK_SIGNALS(expression))) |
51 | 67 |
52 } // namespace bin | 68 } // namespace bin |
53 } // namespace dart | 69 } // namespace dart |
54 | 70 |
55 #endif // BIN_SIGNAL_BLOCKER_H_ | 71 #endif // BIN_SIGNAL_BLOCKER_H_ |
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