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mem: add LOCKED flag to mlock the mapped memory

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This commit is contained in:
Wim Taymans 2021-01-19 10:51:50 +01:00
parent 7e5441fbb3
commit 778bc45558
2 changed files with 4 additions and 0 deletions
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3
src/pipewire/mem.c
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@ -296,6 +296,9 @@ static struct mapping * memblock_map(struct memblock *b,
else
fl |= MAP_SHARED;
if (flags & PW_MEMMAP_FLAG_LOCKED)
fl |= MAP_LOCKED;
if (flags & PW_MEMMAP_FLAG_TWICE) {
pw_log_error(NAME" %p: implement me PW_MEMMAP_FLAG_TWICE", p);
errno = ENOTSUP;

1
src/pipewire/mem.h
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@ -51,6 +51,7 @@ enum pw_memmap_flags {
PW_MEMMAP_FLAG_TWICE = (1 << 2), /**< map the same area twice after each other,
* creating a circular ringbuffer */
PW_MEMMAP_FLAG_PRIVATE = (1 << 3), /**< writes will be private */
PW_MEMMAP_FLAG_LOCKED = (1 << 4), /**< lock the memory into RAM */
PW_MEMMAP_FLAG_READWRITE = PW_MEMMAP_FLAG_READ | PW_MEMMAP_FLAG_WRITE,
};