The High Level API example, has reachable memory

[rrangwan]

Hi, the most simple example whereby the song is played till 'Enter' is pressed, still has reachable memory (I guess for the rest of the song). How do I free this? ma_engine_uninit(&engine); was not enough

[mackron]

Is there any more information about what memory allocation is not freed? There's not enough information to go on.

[rrangwan]

The code is simply:
`
int main(void)
{
ma_result result;
ma_engine engine;

result = ma_engine_init(NULL, &engine);
if (result != MA_SUCCESS) {
    printf("Audio Failed");
    return -1;
}

ma_engine_play_sound(&engine, "song2.mp3", NULL);
sleep(21);
ma_engine_uninit(&engine);
return 0;

}

`

I compile it on my linux (and it works fine) : gcc -Wall -Werror -Wextra main.c -o music -pthread -ldl -lm

I run it with valgrind : valgrind ./music

and this is the report:

==3105== HEAP SUMMARY:
==3105== in use at exit: 93,103 bytes in 246 blocks
==3105== total heap usage: 1,109 allocs, 863 frees, 942,882 bytes allocated
==3105==
==3105== LEAK SUMMARY:
==3105== definitely lost: 0 bytes in 0 blocks
==3105== indirectly lost: 0 bytes in 0 blocks
==3105== possibly lost: 0 bytes in 0 blocks
==3105== still reachable: 93,103 bytes in 246 blocks
==3105== suppressed: 0 bytes in 0 blocks

[mackron]

Are there any details about which malloc() was left un-freed? Also, it might be backend-specific. Are you able to compile with -DMA_DEBUG_OUTPUT and post the output so I can see the details of the backend that's being used?

I know that at least on Windows, there's some memory that's allocated by the backend (WASAPI, DirectSound, etc.) which is always reported as un-freed by memory leak detectors. It could be something similar, but I'm not sure.

[rrangwan]

Hi, thanks for the responses, and really appreciated your library.. I a attaching what you asked for below... but I have to admit, its all going over my head now... I am using this for bonus points for a coding camp project, about making a raycasting game.... the graders check for leaks, I guess if I can give them a valid explanation then that would be suffice too... With out further adou, below is with the -DMA*

raj@raj-home:/gkkk3$ gcc main.c -o music -pthread -ldl -lm -DMA_DEBUG_OUTPUT
raj@raj-home:/gkkk3$ ./music
DEBUG: Failed to initialize WASAPI backend.
DEBUG: Failed to initialize DirectSound backend.
DEBUG: Failed to initialize WinMM backend.
DEBUG: Failed to initialize Core Audio backend.
DEBUG: Failed to initialize sndio backend.
DEBUG: Failed to initialize audio(4) backend.
DEBUG: Failed to initialize OSS backend.
DEBUG: Attempting to initialize PulseAudio backend...
DEBUG: Loading library: libpulse.so
INFO: Failed to load library: libpulse.so
DEBUG: Loading library: libpulse.so.0
DEBUG: Loading symbol: pa_mainloop_new
DEBUG: Loading symbol: pa_mainloop_free
DEBUG: Loading symbol: pa_mainloop_quit
DEBUG: Loading symbol: pa_mainloop_get_api
DEBUG: Loading symbol: pa_mainloop_iterate
DEBUG: Loading symbol: pa_mainloop_wakeup
DEBUG: Loading symbol: pa_threaded_mainloop_new
DEBUG: Loading symbol: pa_threaded_mainloop_free
DEBUG: Loading symbol: pa_threaded_mainloop_start
DEBUG: Loading symbol: pa_threaded_mainloop_stop
DEBUG: Loading symbol: pa_threaded_mainloop_lock
DEBUG: Loading symbol: pa_threaded_mainloop_unlock
DEBUG: Loading symbol: pa_threaded_mainloop_wait
DEBUG: Loading symbol: pa_threaded_mainloop_signal
DEBUG: Loading symbol: pa_threaded_mainloop_accept
DEBUG: Loading symbol: pa_threaded_mainloop_get_retval
DEBUG: Loading symbol: pa_threaded_mainloop_get_api
DEBUG: Loading symbol: pa_threaded_mainloop_in_thread
DEBUG: Loading symbol: pa_threaded_mainloop_set_name
DEBUG: Loading symbol: pa_context_new
DEBUG: Loading symbol: pa_context_unref
DEBUG: Loading symbol: pa_context_connect
DEBUG: Loading symbol: pa_context_disconnect
DEBUG: Loading symbol: pa_context_set_state_callback
DEBUG: Loading symbol: pa_context_get_state
DEBUG: Loading symbol: pa_context_get_sink_info_list
DEBUG: Loading symbol: pa_context_get_source_info_list
DEBUG: Loading symbol: pa_context_get_sink_info_by_name
DEBUG: Loading symbol: pa_context_get_source_info_by_name
DEBUG: Loading symbol: pa_operation_unref
DEBUG: Loading symbol: pa_operation_get_state
DEBUG: Loading symbol: pa_channel_map_init_extend
DEBUG: Loading symbol: pa_channel_map_valid
DEBUG: Loading symbol: pa_channel_map_compatible
DEBUG: Loading symbol: pa_stream_new
DEBUG: Loading symbol: pa_stream_unref
DEBUG: Loading symbol: pa_stream_connect_playback
DEBUG: Loading symbol: pa_stream_connect_record
DEBUG: Loading symbol: pa_stream_disconnect
DEBUG: Loading symbol: pa_stream_get_state
DEBUG: Loading symbol: pa_stream_get_sample_spec
DEBUG: Loading symbol: pa_stream_get_channel_map
DEBUG: Loading symbol: pa_stream_get_buffer_attr
DEBUG: Loading symbol: pa_stream_set_buffer_attr
DEBUG: Loading symbol: pa_stream_get_device_name
DEBUG: Loading symbol: pa_stream_set_write_callback
DEBUG: Loading symbol: pa_stream_set_read_callback
DEBUG: Loading symbol: pa_stream_set_suspended_callback
DEBUG: Loading symbol: pa_stream_set_moved_callback
DEBUG: Loading symbol: pa_stream_is_suspended
DEBUG: Loading symbol: pa_stream_flush
DEBUG: Loading symbol: pa_stream_drain
DEBUG: Loading symbol: pa_stream_is_corked
DEBUG: Loading symbol: pa_stream_cork
DEBUG: Loading symbol: pa_stream_trigger
DEBUG: Loading symbol: pa_stream_begin_write
DEBUG: Loading symbol: pa_stream_write
DEBUG: Loading symbol: pa_stream_peek
DEBUG: Loading symbol: pa_stream_drop
DEBUG: Loading symbol: pa_stream_writable_size
DEBUG: Loading symbol: pa_stream_readable_size
DEBUG: System Architecture:
DEBUG: Endian: LE
DEBUG: SSE2: YES
DEBUG: AVX2: NO
DEBUG: NEON: NO
INFO: [PulseAudio] Playback attr: maxlength=14400, tlength=4800, prebuf=-1, minreq=-1, fragsize=4800; periodSizeInFrames=1200
INFO: [PulseAudio] Playback sample spec: format=16-bit Signed Integer, channels=2, rate=48000
INFO: [PulseAudio] Playback actual attr: maxlength=14400, tlength=3600, prebuf=2404, minreq=1200, fragsize=4800; internalPeriodSizeInFrames=900
INFO: [PulseAudio]
INFO: Built-in Audio Analog Stereo (Playback)
INFO: Format: 32-bit IEEE Floating Point -> 16-bit Signed Integer
INFO: Channels: 2 -> 2
INFO: Sample Rate: 48000 -> 48000
INFO: Buffer Size: 900*4 (3600)
INFO: Conversion:
INFO: Pre Format Conversion: NO
INFO: Post Format Conversion: YES
INFO: Channel Routing: NO
INFO: Resampling: NO
INFO: Passthrough: NO