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Issue 67197: Start addressing massive arrays on the stack. There is hardly ever... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 11 years, 8 months ago
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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. 1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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109 class PreallocatedMemoryThread: public Thread { 109 class PreallocatedMemoryThread: public Thread {
110 public: 110 public:
111 PreallocatedMemoryThread() : keep_running_(true) { 111 PreallocatedMemoryThread() : keep_running_(true) {
112 wait_for_ever_semaphore_ = OS::CreateSemaphore(0); 112 wait_for_ever_semaphore_ = OS::CreateSemaphore(0);
113 data_ready_semaphore_ = OS::CreateSemaphore(0); 113 data_ready_semaphore_ = OS::CreateSemaphore(0);
114 } 114 }
115 115
116 // When the thread starts running it will allocate a fixed number of bytes 116 // When the thread starts running it will allocate a fixed number of bytes
117 // on the stack and publish the location of this memory for others to use. 117 // on the stack and publish the location of this memory for others to use.
118 void Run() { 118 void Run() {
119 EmbeddedVector<char, 32 * 1024> local_buffer; 119 EmbeddedVector<char, 15 * 1024> local_buffer;
120 120
121 // Initialize the buffer with a known good value. 121 // Initialize the buffer with a known good value.
122 OS::StrNCpy(local_buffer, "Trace data was not generated.\n", 122 OS::StrNCpy(local_buffer, "Trace data was not generated.\n",
123 local_buffer.length()); 123 local_buffer.length());
124 124
125 // Publish the local buffer and signal its availability. 125 // Publish the local buffer and signal its availability.
126 data_ = &local_buffer[0]; 126 data_ = &local_buffer[0];
127 length_ = sizeof(local_buffer); 127 length_ = sizeof(local_buffer);
128 data_ready_semaphore_->Signal(); 128 data_ready_semaphore_->Signal();
129 129
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912 Top::break_access_->Lock(); 912 Top::break_access_->Lock();
913 } 913 }
914 914
915 915
916 ExecutionAccess::~ExecutionAccess() { 916 ExecutionAccess::~ExecutionAccess() {
917 Top::break_access_->Unlock(); 917 Top::break_access_->Unlock();
918 } 918 }
919 919
920 920
921 } } // namespace v8::internal 921 } } // namespace v8::internal
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