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authorLennart Poettering <lennart@poettering.net>2007-09-02 20:37:55 +0000
committerLennart Poettering <lennart@poettering.net>2007-09-02 20:37:55 +0000
commit7dbabc47bbfe517cd85e8b25b360413e511b3aec (patch)
tree5feaa0753b7b8920a83989e084010ed78e0e808c
parentf36ca797160c7eddaacf5cc18d366a74dbee229a (diff)
add new pa_memchunk_will_need() API, similar to pa_memblock_will_need()
git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1747 fefdeb5f-60dc-0310-8127-8f9354f1896f
-rw-r--r--src/pulsecore/memchunk.c19
-rw-r--r--src/pulsecore/memchunk.h3
2 files changed, 22 insertions, 0 deletions
diff --git a/src/pulsecore/memchunk.c b/src/pulsecore/memchunk.c
index 20ddb11d..319767f1 100644
--- a/src/pulsecore/memchunk.c
+++ b/src/pulsecore/memchunk.c
@@ -29,8 +29,11 @@
#include <stdlib.h>
#include <assert.h>
#include <string.h>
+#include <errno.h>
#include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/core-util.h>
#include "memchunk.h"
@@ -72,3 +75,19 @@ pa_memchunk* pa_memchunk_reset(pa_memchunk *c) {
return c;
}
+
+pa_memchunk *pa_memchunk_will_need(pa_memchunk *c) {
+ void *p;
+
+ pa_assert(c);
+ pa_assert(c->memblock);
+
+ /* A version of pa_memblock_will_need() that works on memchunks
+ * instead of memblocks */
+
+ p = (uint8_t*) pa_memblock_acquire(c->memblock) + c->index;
+ pa_will_need(p, c->length);
+ pa_memblock_release(c->memblock);
+
+ return c;
+}
diff --git a/src/pulsecore/memchunk.h b/src/pulsecore/memchunk.h
index 10cab2b9..17e5f75f 100644
--- a/src/pulsecore/memchunk.h
+++ b/src/pulsecore/memchunk.h
@@ -44,4 +44,7 @@ pa_memchunk* pa_memchunk_make_writable(pa_memchunk *c, size_t min);
* but sets all members to zero. */
pa_memchunk* pa_memchunk_reset(pa_memchunk *c);
+/* Map a memory chunk back into memory if it was swapped out */
+pa_memchunk *pa_memchunk_will_need(pa_memchunk *c);
+
#endif