William A. Rowe, Jr. wrote:
size_t is an unsigned integral type that holds the value
of a sizeof operation. The relationship you mention
need not be true on a 64-bit platform.
There you are wrong - as I've been posting about LP64 or P64
architectures (such as Win64).
Um. Even on those archite
APACHE PORTABLE RUNTIME (APR) LIBRARY STATUS: -*-text-*-
Last modified at [$Date: 2005-03-17 13:57:42 -0500 (Thu, 17 Mar 2005) $]
Releases:
Standalone
1.1.1 : released March 17, 2005
1.1.0 : released January 25, 2005
1.0.1 : released November 18, 2004
APRUTIL LIBRARY STATUS: -*-text-*-
Last modified at [$Date: 2005-03-17 14:03:13 -0500 (Thu, 17 Mar 2005) $]
Release:
1.1.2 : released March 17, 2005
1.1.1 : not released
1.1.0 : released January 25, 2005
1.0.1 : released Novem
Have you looked at the apr_thread_cond_* API? These are
virtually identical to POSIX Condition Variables, and can
be used to do what you're talking about.
-aaron
On May 18, 2005, at 4:09 AM, Bruno Haas wrote:
I am quite surprised that there are no counting semaphores in apr.
What I would need to
At 09:35 AM 5/18/2005, Joe Orton wrote:
>On Wed, May 18, 2005 at 02:41:48AM -0500, William Rowe wrote:
>> At 09:01 AM 5/17/2005, Joe Orton wrote:
>> >On Mon, May 16, 2005 at 01:39:20PM -0500, William Rowe wrote:
>> >> Issue #1; How to manipulate nelts in apr_table_entry?
>> >>
>> >> We can preser
At 11:24 AM 5/18/2005, Andrew Binstock wrote:
>Quick note re:
>
>> It's embodied by the patch below - the delta of two pointer
>> offsets result in a size_t (by definition). On LP64/P64, the
>> sizeof(int) < sizeof(size_t).
>
>That's not the definition of size_t. The delta of
>two pointers you're
On 5/18/05, Dan Johnson <[EMAIL PROTECTED]> wrote:
> I also don't understand why semaphores are missing from APR, especially
> since mutexes seem to have been implemented on top of them in many
> cases. This must have been a deliberate choice, but why?
I would assume that nobody who needed them p
Quick note re:
> It's embodied by the patch below - the delta of two pointer
> offsets result in a size_t (by definition). On LP64/P64,
the
> sizeof(int) < sizeof(size_t).
That's not the definition of size_t. The delta of
two pointers you're referring to is ptrdiff_t.
size_t is an unsigned inte
I ran into the same problem and (since I was bound to using just APR)
wound up using atomic integer operations combined with a mutex.
Basically, a semaphore wait looks like:
if (apr_atomic_dec32 (&count) < 0)
apr_thread_mutex_lock (mutex);
and a semaphore post looks like:
if ((apr_int32_
On Wed, May 18, 2005 at 02:41:48AM -0500, William Rowe wrote:
> At 09:01 AM 5/17/2005, Joe Orton wrote:
> >On Mon, May 16, 2005 at 01:39:20PM -0500, William Rowe wrote:
> >> Issue #1; How to manipulate nelts in apr_table_entry?
> >>
> >> We can preserve the existing behavior of nelts, defining it
I am quite surprised that there are no counting semaphores in apr. What
I would need to do is have thread A releasing a semaphore for as many
times as an event has happened and thread B blocked waiting for the
semaphore. The counting semaphore would guarantee that thread B is
"woken up" as many
At 09:01 AM 5/17/2005, Joe Orton wrote:
>On Mon, May 16, 2005 at 01:39:20PM -0500, William Rowe wrote:
>> Issue #1; How to manipulate nelts in apr_table_entry?
>>
>> We can preserve the existing behavior of nelts, defining it as
>> a simple int. A few casts are required out of the result of some
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