libpulse: Store pa_stream pointers to hashmaps instead of dynarrays.

Since the stream identifiers (channels) are monotonically growing integer, it
isn't a good idea to use them as index to a dynamic array, because the array
will grow all the time. This is not a problem with client connections that
don't create many streams, but, for example, long-running clients that use
libcanberra for playing event sounds, this means that the client connection
effectively leaks memory.

3 files changed, 17 insertions, 18 deletions

diff --git a/src/pulse/context.c b/src/pulse/context.c
index e33143d9..00184920 100644
--- a/src/pulse/context.c
+++ b/src/pulse/context.c
@@ -63,7 +63,7 @@
 #include <pulsecore/native-common.h>
 #include <pulsecore/pdispatch.h>
 #include <pulsecore/pstream.h>
-#include <pulsecore/dynarray.h>
+#include <pulsecore/hashmap.h>
 #include <pulsecore/socket-client.h>
 #include <pulsecore/pstream-util.h>
 #include <pulsecore/core-rtclock.h>
@@ -160,8 +160,8 @@ pa_context *pa_context_new_with_proplist(pa_mainloop_api *mainloop, const char *
     c->client = NULL;
     c->pstream = NULL;
     c->pdispatch = NULL;
-    c->playback_streams = pa_dynarray_new();
-    c->record_streams = pa_dynarray_new();
+    c->playback_streams = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+    c->record_streams = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
     c->client_index = PA_INVALID_INDEX;
     c->use_rtclock = pa_mainloop_is_our_api(mainloop);
 
@@ -266,9 +266,9 @@ static void context_free(pa_context *c) {
 #endif
 
     if (c->record_streams)
-        pa_dynarray_free(c->record_streams, NULL, NULL);
+        pa_hashmap_free(c->record_streams, NULL, NULL);
     if (c->playback_streams)
-        pa_dynarray_free(c->playback_streams, NULL, NULL);
+        pa_hashmap_free(c->playback_streams, NULL, NULL);
 
     if (c->mempool)
         pa_mempool_free(c->mempool);
@@ -375,7 +375,7 @@ static void pstream_memblock_callback(pa_pstream *p, uint32_t channel, int64_t o
 
     pa_context_ref(c);
 
-    if ((s = pa_dynarray_get(c->record_streams, channel))) {
+    if ((s = pa_hashmap_get(c->record_streams, PA_UINT32_TO_PTR(channel)))) {
 
         if (chunk->memblock) {
             pa_memblockq_seek(s->record_memblockq, offset, seek, TRUE);
diff --git a/src/pulse/internal.h b/src/pulse/internal.h
index b371bfc2..9545d500 100644
--- a/src/pulse/internal.h
+++ b/src/pulse/internal.h
@@ -34,7 +34,6 @@
 #include <pulsecore/socket-client.h>
 #include <pulsecore/pstream.h>
 #include <pulsecore/pdispatch.h>
-#include <pulsecore/dynarray.h>
 #include <pulsecore/llist.h>
 #include <pulsecore/native-common.h>
 #include <pulsecore/strlist.h>
@@ -66,7 +65,7 @@ struct pa_context {
     pa_pstream *pstream;
     pa_pdispatch *pdispatch;
 
-    pa_dynarray *record_streams, *playback_streams;
+    pa_hashmap *record_streams, *playback_streams;
     PA_LLIST_HEAD(pa_stream, streams);
     PA_LLIST_HEAD(pa_operation, operations);
 
diff --git a/src/pulse/stream.c b/src/pulse/stream.c
index 4dea5670..40812566 100644
--- a/src/pulse/stream.c
+++ b/src/pulse/stream.c
@@ -199,7 +199,7 @@ static void stream_unlink(pa_stream *s) {
         pa_pdispatch_unregister_reply(s->context->pdispatch, s);
 
     if (s->channel_valid) {
-        pa_dynarray_put((s->direction == PA_STREAM_PLAYBACK) ? s->context->playback_streams : s->context->record_streams, s->channel, NULL);
+        pa_hashmap_remove((s->direction == PA_STREAM_PLAYBACK) ? s->context->playback_streams : s->context->record_streams, PA_UINT32_TO_PTR(s->channel));
         s->channel = 0;
         s->channel_valid = FALSE;
     }
@@ -354,7 +354,7 @@ void pa_command_stream_killed(pa_pdispatch *pd, uint32_t command, uint32_t tag,
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, channel)))
+    if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -474,7 +474,7 @@ void pa_command_stream_moved(pa_pdispatch *pd, uint32_t command, uint32_t tag, p
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_MOVED ? c->playback_streams : c->record_streams, channel)))
+    if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_MOVED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -557,7 +557,7 @@ void pa_command_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_BUFFER_ATTR_CHANGED ? c->playback_streams : c->record_streams, channel)))
+    if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_BUFFER_ATTR_CHANGED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -609,7 +609,7 @@ void pa_command_stream_suspended(pa_pdispatch *pd, uint32_t command, uint32_t ta
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_SUSPENDED ? c->playback_streams : c->record_streams, channel)))
+    if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_SUSPENDED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -651,7 +651,7 @@ void pa_command_stream_started(pa_pdispatch *pd, uint32_t command, uint32_t tag,
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(c->playback_streams, channel)))
+    if (!(s = pa_hashmap_get(c->playback_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -697,7 +697,7 @@ void pa_command_stream_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, p
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_EVENT ? c->playback_streams : c->record_streams, channel)))
+    if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_EVENT ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -733,7 +733,7 @@ void pa_command_request(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tag
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(c->playback_streams, channel)))
+    if (!(s = pa_hashmap_get(c->playback_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -767,7 +767,7 @@ void pa_command_overflow_or_underflow(pa_pdispatch *pd, uint32_t command, uint32
         goto finish;
     }
 
-    if (!(s = pa_dynarray_get(c->playback_streams, channel)))
+    if (!(s = pa_hashmap_get(c->playback_streams, PA_UINT32_TO_PTR(channel))))
         goto finish;
 
     if (s->state != PA_STREAM_READY)
@@ -997,7 +997,7 @@ void pa_create_stream_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag,
     }
 
     s->channel_valid = TRUE;
-    pa_dynarray_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, s->channel, s);
+    pa_hashmap_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, PA_UINT32_TO_PTR(s->channel), s);
 
     create_stream_complete(s);