abstractCompiler.cpp revision 9111:a41fe5ffa839 
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23
24
25#include "precompiled.hpp"
26#include "compiler/abstractCompiler.hpp"
27#include "compiler/compileBroker.hpp"
28#include "runtime/mutexLocker.hpp"
29
30bool AbstractCompiler::should_perform_init() {
31  if (_compiler_state != initialized) {
32    MutexLocker only_one(CompileThread_lock);
33
34    if (_compiler_state == uninitialized) {
35      _compiler_state = initializing;
36      return true;
37    } else {
38      while (_compiler_state == initializing) {
39        CompileThread_lock->wait();
40      }
41    }
42  }
43  return false;
44}
45
46bool AbstractCompiler::should_perform_shutdown() {
47  // Since this method can be called by multiple threads, the lock ensures atomicity of
48  // decrementing '_num_compiler_threads' and the following operations.
49  MutexLocker only_one(CompileThread_lock);
50  _num_compiler_threads--;
51  assert (CompileBroker::is_compilation_disabled_forever(), "Must be set, otherwise thread waits forever");
52
53  // Only the last thread will perform shutdown operations
54  if (_num_compiler_threads == 0) {
55    return true;
56  }
57  return false;
58}
59
60void AbstractCompiler::set_state(int state) {
61  // Ensure that state is only set by one thread at a time
62  MutexLocker only_one(CompileThread_lock);
63  _compiler_state =  state;
64  CompileThread_lock->notify_all();
65}
66