forked from OSchip/llvm-project
107 lines
1.9 KiB
C++
107 lines
1.9 KiB
C++
#include "lldb/Host/ProcessRunLock.h"
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#include "lldb/Host/windows/windows.h"
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namespace
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{
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#if defined(__MINGW32__)
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// Taken from WinNT.h
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typedef struct _RTL_SRWLOCK {
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PVOID Ptr;
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} RTL_SRWLOCK, *PRTL_SRWLOCK;
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// Taken from WinBase.h
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typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
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#endif
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}
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static PSRWLOCK GetLock(lldb::rwlock_t lock)
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{
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return static_cast<PSRWLOCK>(lock);
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}
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static bool ReadLock(lldb::rwlock_t rwlock)
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{
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::AcquireSRWLockShared(GetLock(rwlock));
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return true;
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}
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static bool ReadUnlock(lldb::rwlock_t rwlock)
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{
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::ReleaseSRWLockShared(GetLock(rwlock));
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return true;
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}
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static bool WriteLock(lldb::rwlock_t rwlock)
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{
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::AcquireSRWLockExclusive(GetLock(rwlock));
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return true;
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}
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static bool WriteTryLock(lldb::rwlock_t rwlock)
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{
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return !!::TryAcquireSRWLockExclusive(GetLock(rwlock));
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}
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static bool WriteUnlock(lldb::rwlock_t rwlock)
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{
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::ReleaseSRWLockExclusive(GetLock(rwlock));
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return true;
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}
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using namespace lldb_private;
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ProcessRunLock::ProcessRunLock()
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: m_running(false)
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{
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m_rwlock = new SRWLOCK;
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InitializeSRWLock(GetLock(m_rwlock));
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}
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ProcessRunLock::~ProcessRunLock()
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{
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delete m_rwlock;
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}
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bool ProcessRunLock::ReadTryLock()
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{
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::ReadLock(m_rwlock);
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if (m_running == false)
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return true;
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::ReadUnlock(m_rwlock);
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return false;
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}
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bool ProcessRunLock::ReadUnlock()
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{
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return ::ReadUnlock(m_rwlock);
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}
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bool ProcessRunLock::SetRunning ()
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{
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WriteLock(m_rwlock);
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m_running = true;
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WriteUnlock(m_rwlock);
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return true;
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}
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bool ProcessRunLock::TrySetRunning ()
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{
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if (WriteTryLock(m_rwlock))
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{
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bool was_running = m_running;
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m_running = true;
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WriteUnlock(m_rwlock);
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return !was_running;
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}
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return false;
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}
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bool ProcessRunLock::SetStopped ()
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{
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WriteLock(m_rwlock);
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m_running = false;
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WriteUnlock(m_rwlock);
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return true;
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}
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