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lavu/fifo: drop useless comments 

This object was never intended to be thread-safe, so these carry no
useful information.
This commit is contained in:
Anton Khirnov 2021-12-31 11:29:32 +01:00
parent 549ccea54e
commit 53f513c60b
1 changed files with 0 additions and 5 deletions
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5
libavutil/fifo.c
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@ -144,7 +144,6 @@ int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size,
memcpy(wptr, src, len);
src = (uint8_t *)src + len;
}
// Write memory barrier needed for SMP here in theory
wptr += len;
if (wptr >= f->end)
wptr = f->buffer;
@ -197,7 +196,6 @@ int av_fifo_generic_peek_at(AVFifoBuffer *f, void *dest, int offset, int buf_siz
int av_fifo_generic_peek(AVFifoBuffer *f, void *dest, int buf_size,
void (*func)(void *, void *, int))
{
// Read memory barrier needed for SMP here in theory
uint8_t *rptr = f->rptr;
do {
@ -208,7 +206,6 @@ int av_fifo_generic_peek(AVFifoBuffer *f, void *dest, int buf_size,
memcpy(dest, rptr, len);
dest = (uint8_t *)dest + len;
}
// memory barrier needed for SMP here in theory
rptr += len;
if (rptr >= f->end)
rptr -= f->end - f->buffer;
@ -221,7 +218,6 @@ int av_fifo_generic_peek(AVFifoBuffer *f, void *dest, int buf_size,
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size,
void (*func)(void *, void *, int))
{
// Read memory barrier needed for SMP here in theory
do {
int len = FFMIN(f->end - f->rptr, buf_size);
if (func)
@ -230,7 +226,6 @@ int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size,
memcpy(dest, f->rptr, len);
dest = (uint8_t *)dest + len;
}
// memory barrier needed for SMP here in theory
av_fifo_drain(f, len);
buf_size -= len;
} while (buf_size > 0);