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2012-04-07main-loop: interrupt wait when data arrives on a socketPaolo Bonzini
Right now, the main loop is not interrupted when data arrives on a socket. To fix this, register each socket to interrupt the main loop with WSAEventSelect. This does not replace select, it only communicates a change in socket state that requires a select call. Since the interrupt fires only once per recv call, or only once after a send call returns EWOULDBLOCK we can activate it on all events unconditionally. If QEMU is momentarily uninterested on some condition, the main loop will not busy wait. Instead, it may get one extra wakeup, but then it will ignore the condition until progress occurs and/or qemu_set_fd_handler is called to set a callback. At this point the condition will be tested via select and the callback will be invoked even if it is still disabled on the event. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-12-22link the main loop and its dependencies into the toolsPaolo Bonzini
Using the main loop code from QEMU enables tools to operate fully asynchronously. Advantages include better Windows portability (for some definition of portability) over glib's. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-21add socket_set_blockPaolo Bonzini
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-02-20w32: Remove implementation of function ffsStefan Weil
This implementation is no longer needed. ffs is either a built-in function (for compilations with optimisation) or taken from libiberty.a (which was added by the previous patch). Cc: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-30Consolidate oom_check() functionsJes Sorensen
This consolidates the duplicated oom_check() functions, as well as splitting them into OS dependant versions to avoid the #ifdef grossness that was present in the old osdep.c version. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-30Move qemu_gettimeofday() to OS specific filesJes Sorensen
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-30Move osdep socket code to oslib-{posix,win32}.cJes Sorensen
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-30Move QEMU OS dependant library functions to OS specific filesJes Sorensen
This moves library functions used by both QEMU and the QEMU tools, such as qemu-img, qemu-nbd etc. from osdep.c to oslib-{posix,win32}.c In addition it introduces oslib-obj.y to the Makefile set to be included by the various targets, instead of relying on these library functions magically getting included via block-obj-y. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>