From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- docs/nspr/reference/pr_waitsemaphore.rst | 42 ++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 docs/nspr/reference/pr_waitsemaphore.rst (limited to 'docs/nspr/reference/pr_waitsemaphore.rst') diff --git a/docs/nspr/reference/pr_waitsemaphore.rst b/docs/nspr/reference/pr_waitsemaphore.rst new file mode 100644 index 0000000000..1a0c7b3d1c --- /dev/null +++ b/docs/nspr/reference/pr_waitsemaphore.rst @@ -0,0 +1,42 @@ +PR_WaitSemaphore +================ + +Returns the value of the environment variable. + + +Syntax +------ + +.. code:: + + #include + + NSPR_API(PRStatus) PR_WaitSemaphore(PRSem *sem); + + +Parameter +~~~~~~~~~ + +The function has the following parameter: + +``sem`` + A pointer to a ``PRSem`` structure returned from a call to + :ref:`PR_OpenSemaphore`. + + +Returns +~~~~~~~ + +:ref:`PRStatus` + + +Description +----------- + +:ref:`PR_WaitSemaphore` tests the value of the semaphore. If the value of +the semaphore is > 0, the value of the semaphore is decremented and the +function returns. If the value of the semaphore is 0, the function +blocks until the value becomes > 0, then the semaphore is decremented +and the function returns. + +The "test and decrement" operation is performed atomically. -- cgit v1.2.3