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| author | Thomas Martitz <kugel@rockbox.org> | 2013-05-29 07:12:01 +0200 |
|---|---|---|
| committer | Thomas Martitz <kugel@rockbox.org> | 2013-12-22 23:11:32 +0100 |
| commit | d25a512caf4adf2aac3ce6ac8e1f2c556c0c6c37 (patch) | |
| tree | 511bf41e94616408e4253e1829772c7994561aac /firmware/include | |
| parent | 9f878b105dbb51e18adfc3023adc09bc6f61fad3 (diff) | |
| download | rockbox-d25a512caf4adf2aac3ce6ac8e1f2c556c0c6c37.tar.gz rockbox-d25a512caf4adf2aac3ce6ac8e1f2c556c0c6c37.tar.bz2 rockbox-d25a512caf4adf2aac3ce6ac8e1f2c556c0c6c37.zip | |
buflib: Try harder in buflib_alloc_maximum().
This function will now ask shrinkable allocations to give up all of their
memory. With future support of playback.c this can be used as a safe
replacement for audio_get_buffer().
Change-Id: I290a51d2c75254e66baf5698c41dc444dea6247a
Diffstat (limited to 'firmware/include')
| -rw-r--r-- | firmware/include/buflib.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/firmware/include/buflib.h b/firmware/include/buflib.h index 7183951c6c..aa6c232f72 100644 --- a/firmware/include/buflib.h +++ b/firmware/include/buflib.h @@ -111,10 +111,10 @@ struct buflib_callbacks { void (*sync_callback)(int handle, bool sync_on); }; -#define BUFLIB_SHRINK_POS_MASK ((1<<0|1<<1)<<30) #define BUFLIB_SHRINK_SIZE_MASK (~BUFLIB_SHRINK_POS_MASK) #define BUFLIB_SHRINK_POS_FRONT (1u<<31) #define BUFLIB_SHRINK_POS_BACK (1u<<30) +#define BUFLIB_SHRINK_POS_MASK (BUFLIB_SHRINK_POS_FRONT|BUFLIB_SHRINK_POS_BACK) /** * Possible return values for the callbacks, some of them can cause @@ -193,8 +193,10 @@ int buflib_alloc_ex(struct buflib_context *ctx, size_t size, const char *name, * will allow buflib to permit allocations by shrinking the buffer returned by * this function. * - * Note that this currently gives whatever buflib_available() returns. However, - * do not depend on this behavior, it may change. + * Note that this might return many more bytes than buflib_available() or + * buflib_allocatable() return, because it agressively compacts the pool + * and even shrinks other allocations. However, do not depend on this behavior, + * it may change. * * name: A string identifier giving this allocation a name * size: The actual size will be returned into size |