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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 #include "vm/globals.h" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_OS_ANDROID) | 6 #if defined(TARGET_OS_ANDROID) |
7 | 7 |
8 #include "vm/virtual_memory.h" | 8 #include "vm/virtual_memory.h" |
9 | 9 |
10 #include <sys/mman.h> // NOLINT | 10 #include <sys/mman.h> // NOLINT |
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76 -1, 0); | 76 -1, 0); |
77 if (address == MAP_FAILED) { | 77 if (address == MAP_FAILED) { |
78 return false; | 78 return false; |
79 } | 79 } |
80 return true; | 80 return true; |
81 } | 81 } |
82 | 82 |
83 | 83 |
84 bool VirtualMemory::Protect(void* address, intptr_t size, Protection mode) { | 84 bool VirtualMemory::Protect(void* address, intptr_t size, Protection mode) { |
85 ASSERT(Thread::Current()->IsMutatorThread() || | 85 ASSERT(Thread::Current()->IsMutatorThread() || |
86 !Isolate::Current()->HasMutatorThread() || | |
87 Isolate::Current()->mutator_thread()->IsAtSafepoint()); | 86 Isolate::Current()->mutator_thread()->IsAtSafepoint()); |
88 uword start_address = reinterpret_cast<uword>(address); | 87 uword start_address = reinterpret_cast<uword>(address); |
89 uword end_address = start_address + size; | 88 uword end_address = start_address + size; |
90 uword page_address = Utils::RoundDown(start_address, PageSize()); | 89 uword page_address = Utils::RoundDown(start_address, PageSize()); |
91 int prot = 0; | 90 int prot = 0; |
92 switch (mode) { | 91 switch (mode) { |
93 case kNoAccess: | 92 case kNoAccess: |
94 prot = PROT_NONE; | 93 prot = PROT_NONE; |
95 break; | 94 break; |
96 case kReadOnly: | 95 case kReadOnly: |
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107 break; | 106 break; |
108 } | 107 } |
109 return (mprotect(reinterpret_cast<void*>(page_address), | 108 return (mprotect(reinterpret_cast<void*>(page_address), |
110 end_address - page_address, | 109 end_address - page_address, |
111 prot) == 0); | 110 prot) == 0); |
112 } | 111 } |
113 | 112 |
114 } // namespace dart | 113 } // namespace dart |
115 | 114 |
116 #endif // defined(TARGET_OS_ANDROID) | 115 #endif // defined(TARGET_OS_ANDROID) |
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