diff options
author | 2017-04-25 03:31:15 -0700 | |
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committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/util/coroutine-win32.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/util/coroutine-win32.c')
-rw-r--r-- | qemu/util/coroutine-win32.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/qemu/util/coroutine-win32.c b/qemu/util/coroutine-win32.c deleted file mode 100644 index 02e28e825..000000000 --- a/qemu/util/coroutine-win32.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Win32 coroutine initialization code - * - * Copyright (c) 2011 Kevin Wolf <kwolf@redhat.com> - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "qemu/coroutine_int.h" - -typedef struct -{ - Coroutine base; - - LPVOID fiber; - CoroutineAction action; -} CoroutineWin32; - -static __thread CoroutineWin32 leader; -static __thread Coroutine *current; - -/* This function is marked noinline to prevent GCC from inlining it - * into coroutine_trampoline(). If we allow it to do that then it - * hoists the code to get the address of the TLS variable "current" - * out of the while() loop. This is an invalid transformation because - * the SwitchToFiber() call may be called when running thread A but - * return in thread B, and so we might be in a different thread - * context each time round the loop. - */ -CoroutineAction __attribute__((noinline)) -qemu_coroutine_switch(Coroutine *from_, Coroutine *to_, - CoroutineAction action) -{ - CoroutineWin32 *from = DO_UPCAST(CoroutineWin32, base, from_); - CoroutineWin32 *to = DO_UPCAST(CoroutineWin32, base, to_); - - current = to_; - - to->action = action; - SwitchToFiber(to->fiber); - return from->action; -} - -static void CALLBACK coroutine_trampoline(void *co_) -{ - Coroutine *co = co_; - - while (true) { - co->entry(co->entry_arg); - qemu_coroutine_switch(co, co->caller, COROUTINE_TERMINATE); - } -} - -Coroutine *qemu_coroutine_new(void) -{ - const size_t stack_size = 1 << 20; - CoroutineWin32 *co; - - co = g_malloc0(sizeof(*co)); - co->fiber = CreateFiber(stack_size, coroutine_trampoline, &co->base); - return &co->base; -} - -void qemu_coroutine_delete(Coroutine *co_) -{ - CoroutineWin32 *co = DO_UPCAST(CoroutineWin32, base, co_); - - DeleteFiber(co->fiber); - g_free(co); -} - -Coroutine *qemu_coroutine_self(void) -{ - if (!current) { - current = &leader.base; - leader.fiber = ConvertThreadToFiber(NULL); - } - return current; -} - -bool qemu_in_coroutine(void) -{ - return current && current->caller; -} |