src/pulsecore/shared.h

   1 #ifndef foosharedshfoo
   2 #define foosharedshfoo
   3
   4 /***
   5   This file is part of PulseAudio.
   6
   7   Copyright 2004-2006 Lennart Poettering
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2.1 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #include <pulsecore/core.h>
  26 #include <pulsecore/strbuf.h>
  27
  28 /* The shared property subsystem is to be used to share data between
  29  * modules. Consider them to be kind of "global" variables for a
  30  * core. Why not use the hashmap functions directly? The hashmap
  31  * functions copy neither the key nor value, while this property
  32  * system copies the key. Users of this system have to think about
  33  * reference counting themselves. */
  34
  35 /* Note: please don't confuse this with the proplist framework in
  36  * pulse/proplist.[ch]! */
  37
  38 /* Return a pointer to the value of the specified shared property. */
  39 void* pa_shared_get(pa_core *c, const char *name);
  40
  41 /* Set the shared property 'name' to 'data'. This function fails in
  42  * case a property by this name already exists. The property data is
  43  * not copied or reference counted. This is the caller's job. */
  44 int pa_shared_set(pa_core *c, const char *name, void *data);
  45
  46 /* Remove the specified shared property. Return non-zero on failure */
  47 int pa_shared_remove(pa_core *c, const char *name);
  48
  49 /* A combination of pa_shared_remove() and pa_shared_set() */
  50 int pa_shared_replace(pa_core *c, const char *name, void *data);
  51
  52 /* Dump the current set of shared properties */
  53 void pa_shared_dump(pa_core *c, pa_strbuf *s);
  54
  55 #endif