From 52f7c3f5ef6d9b70ec385fb390bf27962e68ee3d Mon Sep 17 00:00:00 2001 From: rpj Date: Mon, 8 Mar 1999 21:02:20 +0000 Subject: Resolve merge conflicts; minor comment changes. --- tests/tryentercs2.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 tests/tryentercs2.c (limited to 'tests/tryentercs2.c') diff --git a/tests/tryentercs2.c b/tests/tryentercs2.c new file mode 100644 index 0000000..adce6df --- /dev/null +++ b/tests/tryentercs2.c @@ -0,0 +1,59 @@ +/* + * tryentercs.c + * + * See if we have the TryEnterCriticalSection function. + * Does not use any part of pthreads. + */ + +#include +#include +#include + +/* + * Function pointer to TryEnterCriticalSection if it exists + * - otherwise NULL + */ +BOOL (WINAPI *_try_enter_critical_section)(LPCRITICAL_SECTION) = NULL; + +/* + * Handle to kernel32.dll + */ +static HINSTANCE _h_kernel32; + + +int +main() +{ + LPCRITICAL_SECTION lpcs = NULL; + + SetLastError(0); + + printf("Last Error [main enter] %ld\n", (long) GetLastError()); + + /* + * Load KERNEL32 and try to get address of TryEnterCriticalSection + */ + _h_kernel32 = LoadLibrary(TEXT("KERNEL32.DLL")); + _try_enter_critical_section = + (BOOL (PT_STDCALL *)(LPCRITICAL_SECTION)) + GetProcAddress(_h_kernel32, + (LPCSTR) "TryEnterCriticalSection"); + + if (_try_enter_critical_section != NULL) + { + SetLastError(0); + + (*_try_enter_critical_section)(lpcs); + + printf("Last Error [try enter] %ld\n", (long) GetLastError()); + } + + (void) FreeLibrary(_h_kernel32); + + printf("This system %s TryEnterCriticalSection.\n", + (_try_enter_critical_section == NULL) ? "DOES NOT SUPPORT" : "SUPPORTS"); + printf("POSIX Mutexes will be based on Win32 %s.\n", + (_try_enter_critical_section == NULL) ? "Mutexes" : "Critical Sections"); + + return(0); +} \ No newline at end of file -- cgit v1.2.3