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author | Frank Gevaerts <frank@gevaerts.be> | 2010-09-26 12:27:38 +0000 |
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committer | Frank Gevaerts <frank@gevaerts.be> | 2010-09-26 12:27:38 +0000 |
commit | 74dbb3c27b4dfd40bc15886d4b198e8326d9ecf5 (patch) | |
tree | c7a0124ee7189249339f876ca5949121e028baf0 | |
parent | 8ff4f1aec9f19613e4f67d2e22ae96bec7657292 (diff) | |
download | rockbox-74dbb3c27b4dfd40bc15886d4b198e8326d9ecf5.tar.gz rockbox-74dbb3c27b4dfd40bc15886d4b198e8326d9ecf5.zip |
If BUFFER_ALLOC_DEBUG is defined, make buffer_alloc() not actually allocate anything if size==0, so code that uses buffer_alloc(0) to find out what address it would get keeps working
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28174 a1c6a512-1295-4272-9138-f99709370657
-rw-r--r-- | firmware/buffer.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/firmware/buffer.c b/firmware/buffer.c index a21a882ff2..4ede24df21 100644 --- a/firmware/buffer.c +++ b/firmware/buffer.c @@ -72,19 +72,22 @@ void *buffer_alloc(size_t size) #ifdef BUFFER_ALLOC_DEBUG retval +=sizeof(struct buffer_start_marker); - end=(struct buffer_end_marker*)(audiobuf - sizeof(struct buffer_end_marker)); - if(end->magic == BUF_MAGIC) + if(size>0) { - end->last=0; - } - start=(struct buffer_start_marker*)audiobuf; - start->magic = BUF_MAGIC; - start->buffer_size = size; - end=(struct buffer_end_marker*)(audiobuf+sizeof(struct buffer_start_marker)+size); - end->magic = BUF_MAGIC; - end->last = 1; + end=(struct buffer_end_marker*)(audiobuf - sizeof(struct buffer_end_marker)); + if(end->magic == BUF_MAGIC) + { + end->last=0; + } + start=(struct buffer_start_marker*)audiobuf; + start->magic = BUF_MAGIC; + start->buffer_size = size; + end=(struct buffer_end_marker*)(audiobuf+sizeof(struct buffer_start_marker)+size); + end->magic = BUF_MAGIC; + end->last = 1; - audiobuf = ((unsigned char *)end) + sizeof(struct buffer_end_marker); + audiobuf = ((unsigned char *)end) + sizeof(struct buffer_end_marker); + } logf("Alloc %x %d",(unsigned int)retval,size); #else /* !BUFFER_ALLOC_DEBUG */ |