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coroutine: move into libqemuutil.a library

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The coroutine files are currently referenced by the block-obj-y
variable. The coroutine functionality though is already used by
more than just the block code. eg migration code uses coroutine
yield. In the future the I/O channel code will also use the
coroutine yield functionality. Since the coroutine code is nicely
self-contained it can be easily built as part of the libqemuutil.a
library, making it widely available.

The headers are also moved into include/qemu, instead of the
include/block directory, since they are now part of the util
codebase, and the impl was never in the block/ directory
either.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange
2015-09-01 14:48:02 +01:00
parent 57cb38b383
commit 10817bf09d
36 changed files with 45 additions and 39 deletions
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41
util/qemu-coroutine-sleep.c Normal file
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/*
* QEMU coroutine sleep
*
* Copyright IBM, Corp. 2011
*
* Authors:
* Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu/coroutine.h"
#include "qemu/timer.h"
#include "block/aio.h"
typedef struct CoSleepCB {
QEMUTimer *ts;
Coroutine *co;
} CoSleepCB;
static void co_sleep_cb(void *opaque)
{
CoSleepCB *sleep_cb = opaque;
qemu_coroutine_enter(sleep_cb->co, NULL);
}
void coroutine_fn co_aio_sleep_ns(AioContext *ctx, QEMUClockType type,
int64_t ns)
{
CoSleepCB sleep_cb = {
.co = qemu_coroutine_self(),
};
sleep_cb.ts = aio_timer_new(ctx, type, SCALE_NS, co_sleep_cb, &sleep_cb);
timer_mod(sleep_cb.ts, qemu_clock_get_ns(type) + ns);
qemu_coroutine_yield();
timer_del(sleep_cb.ts);
timer_free(sleep_cb.ts);
}