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Issue 10826233: Add _android files for building DartVM on Android (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Incorporate reviewer's feedback (asiva, Soren Gjesse) Created 8 years, 4 months ago
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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/virtual_memory.h" 5 #include "vm/virtual_memory.h"
6 6
7 #include <sys/mman.h> 7 #include <sys/mman.h>
8 #include <sys/unistd.h>
9 #include <unistd.h> 8 #include <unistd.h>
10 9
11 #include "platform/assert.h" 10 #include "platform/assert.h"
12 #include "platform/utils.h" 11 #include "platform/utils.h"
13 12
14 namespace dart { 13 namespace dart {
15 14
16 // standard MAP_FAILED causes "error: use of old-style cast" as it 15 // standard MAP_FAILED causes "error: use of old-style cast" as it
17 // defines MAP_FAILED as ((void *) -1) 16 // defines MAP_FAILED as ((void *) -1)
18 #undef MAP_FAILED 17 #undef MAP_FAILED
19 #define MAP_FAILED reinterpret_cast<void*>(-1) 18 #define MAP_FAILED reinterpret_cast<void*>(-1)
20 19
21 uword VirtualMemory::page_size_ = 0; 20 uword VirtualMemory::page_size_ = 0;
22 21
23 22
24 void VirtualMemory::InitOnce() { 23 void VirtualMemory::InitOnce() {
25 page_size_ = getpagesize(); 24 page_size_ = getpagesize();
26 } 25 }
27 26
28 27
29 VirtualMemory* VirtualMemory::Reserve(intptr_t size) { 28 VirtualMemory* VirtualMemory::Reserve(intptr_t size) {
29 // TODO(4408): use ashmem instead of anonymous memory.
30 void* address = mmap(NULL, size, PROT_NONE, 30 void* address = mmap(NULL, size, PROT_NONE,
31 MAP_PRIVATE | MAP_ANON | MAP_NORESERVE, 31 MAP_PRIVATE | MAP_ANON | MAP_NORESERVE,
32 -1, 0); 32 -1, 0);
33 if (address == MAP_FAILED) { 33 if (address == MAP_FAILED) {
34 return NULL; 34 return NULL;
35 } 35 }
36 MemoryRegion region(address, size); 36 MemoryRegion region(address, size);
37 return new VirtualMemory(region, NULL); 37 return new VirtualMemory(region, NULL);
38 } 38 }
39 39
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89 prot = PROT_READ | PROT_EXEC; 89 prot = PROT_READ | PROT_EXEC;
90 break; 90 break;
91 case kReadWriteExecute: 91 case kReadWriteExecute:
92 prot = PROT_READ | PROT_WRITE | PROT_EXEC; 92 prot = PROT_READ | PROT_WRITE | PROT_EXEC;
93 break; 93 break;
94 } 94 }
95 return (mprotect(address(), size(), prot) == 0); 95 return (mprotect(address(), size(), prot) == 0);
96 } 96 }
97 97
98 } // namespace dart 98 } // namespace dart
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