Changeset 191 for trunk/src/helpers/except.c

Timestamp:

Jul 24, 2002, 11:49:43 PM (23 years ago)

Author:

umoeller

Message:

Mutex modifications.

File:

• trunk/src/helpers/except.c (modified) (3 diffs)

trunk/src/helpers/except.c

@@ -117 +117 @@
  *
  *      As a result, you should protect any section of code which
- *      requests a semaphore with the exception handlers. To protect
- *      yourself against thread termination, use must-complete
- *      sections as well (but be careful with those if your code
- *      takes a long time to execute... but then you shouldn't
- *      request a mutex in the first place).
+ *      requests a semaphore with the exception handlers.
  *
  *      So _whenever_ you request a mutex semaphore, enclose
@@ -133 +129 @@
  +          {
  +              BOOL    fSemOwned = FALSE;
- +              ULONG   ulNesting = 0;
  +
- +              DosEnterMustComplete(&ulNesting);
  +              TRY_QUIET(excpt1)           // or TRY_LOUD
  +              {
- +                  fSemOwned = !WinRequestMutexSem(hmtx, ...);
- +                  if (fSemOwned)
+ +                  if (fSemOwned = !DosRequestMutexSem(hmtx, ...))
  +                  {       ... // work on your protected data
  +                  }
@@ -147 +140 @@
  +
  +              if (fSemOwned)
- +              {
  +                  // this gets executed always, even if an exception occured
  +                  DosReleaseMutexSem(hmtx);
- +                  fSemOwned = FALSE;
- +              }
- +              DosExitMustComplete(&ulNesting);
  +          } // end of your_func
  *