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Add host critical section for the host implementation of tryenter as well

This commit is contained in:
Fisherman166 2018-02-08 07:02:40 -08:00
parent fbbb138f86
commit c2810bed40
1 changed files with 20 additions and 10 deletions
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30
src/CxbxKrnl/EmuKrnlRtl.cpp
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@ -88,36 +88,46 @@ static CRITICAL_SECTION* find_critical_section(
return NULL; return NULL;
} }
static void InitHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_secion) static void InitHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_section)
{ {
CRITICAL_SECTION host_crit_section; CRITICAL_SECTION host_crit_section;
InitializeCriticalSection(&host_crit_section); InitializeCriticalSection(&host_crit_section);
add_critical_section(xbox_crit_secion, host_crit_section); add_critical_section(xbox_crit_section, host_crit_section);
} }
static void EnterHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_secion) static void EnterHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_section)
{ {
// This is required because it is possible for a game to create a critical // This is required because it is possible for a game to create a critical
// section without calling RtlInitializeCriticalSection, which means that // section without calling RtlInitializeCriticalSection, which means that
// there is no host critical section. This hack allows us to create the // there is no host critical section. This hack allows us to create the
// missing critical section. The real Xbox RtlEnterCriticalSection function // missing critical section. The real Xbox RtlEnterCriticalSection function
// does not create a critical section if it does not exist. // does not create a critical section if it does not exist.
CRITICAL_SECTION* host_crit_section = find_critical_section(xbox_crit_secion); CRITICAL_SECTION* host_crit_section = find_critical_section(xbox_crit_section);
if(host_crit_section == NULL) { if(host_crit_section == NULL) {
InitHostCriticalSection(xbox_crit_secion); InitHostCriticalSection(xbox_crit_section);
host_crit_section = find_critical_section(xbox_crit_secion); host_crit_section = find_critical_section(xbox_crit_section);
} }
EnterCriticalSection(host_crit_section); EnterCriticalSection(host_crit_section);
} }
static void LeaveHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_secion) static void LeaveHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_section)
{ {
LeaveCriticalSection(find_critical_section(xbox_crit_secion)); LeaveCriticalSection(find_critical_section(xbox_crit_section));
} }
static BOOL TryEnterHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_secion) static BOOL TryEnterHostCriticalSection(xboxkrnl::PRTL_CRITICAL_SECTION xbox_crit_section)
{ {
return TryEnterCriticalSection(find_critical_section(xbox_crit_secion)); // This is required because it is possible for a game to create a critical
// section without calling RtlInitializeCriticalSection, which means that
// there is no host critical section. This hack allows us to create the
// missing critical section. The real Xbox RtlEnterCriticalSection function
// does not create a critical section if it does not exist.
CRITICAL_SECTION* host_crit_section = find_critical_section(xbox_crit_section);
if(host_crit_section == NULL) {
InitHostCriticalSection(xbox_crit_section);
host_crit_section = find_critical_section(xbox_crit_section);
}
return TryEnterCriticalSection(host_crit_section);
} }
#endif // _WIN32 #endif // _WIN32