qemu/stubs
Kevin Wolf e69ee454b5 monitor: Make current monitor a per-coroutine property
This way, a monitor command handler will still be able to access the
current monitor, but when it yields, all other code code will correctly
get NULL from monitor_cur().

This uses a hash table to map the coroutine pointer to the current
monitor of that coroutine.  Outside of coroutine context, we associate
the current monitor with the leader coroutine of the current thread.

Approaches to implement some form of coroutine local storage directly in
the coroutine core code have been considered and discarded because they
didn't end up being much more generic than the hash table and their
performance impact on coroutines not using coroutine local storage was
unclear. As the block layer uses a coroutine per I/O request, this is a
fast path and we have to be careful. It's safest to just stay out of
this path with code only used by the monitor.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20201005155855.256490-8-kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-10-09 07:08:19 +02:00
..
arch_type.c stubs: Add arch_type 2020-03-06 17:15:38 +01:00
bdrv-next-monitor-owned.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
blk-commit-all.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
blockdev-close-all-bdrv-states.c all: Clean up includes 2016-02-16 14:29:28 +00:00
change-state-handler.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
cmos.c stubs/cmos: Use correct include 2020-09-01 09:10:58 +02:00
cpu-get-clock.c cpu-timers, icount: new modules 2020-10-05 16:41:22 +02:00
cpu-synchronize-state.c cpus: prepare new CpusAccel cpu accelerator interface 2020-10-05 16:41:22 +02:00
cpus-get-virtual-clock.c cpus: prepare new CpusAccel cpu accelerator interface 2020-10-05 16:41:22 +02:00
dump.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
error-printf.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
fdset.c monitor: simplify functions for getting a dup'd fdset entry 2020-09-16 10:33:48 +01:00
fw_cfg.c hw/nvram/fw_cfg: Add fw_cfg_arch_key_name() 2019-05-23 14:10:31 +02:00
gdbstub.c Clean up includes some more 2016-03-22 22:20:16 +01:00
get-vm-name.c stubs: Clean up includes 2016-02-04 17:01:04 +00:00
icount.c icount: rename functions to be consistent with the module name 2020-10-05 16:41:22 +02:00
io_uring.c stubs: add stubs for io_uring interface 2020-01-30 20:59:41 +00:00
iothread-lock.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
iothread.c aio: introduce qemu_get_current_aio_context 2016-10-28 21:50:18 +08:00
is-daemonized.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
isa-bus.c stubs: add isa_create_simple 2020-07-06 17:01:11 +02:00
linux-aio.c linux-aio: properly bubble up errors from initialization 2018-06-27 13:06:34 +01:00
machine-init-done.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
meson.build cpus: prepare new CpusAccel cpu accelerator interface 2020-10-05 16:41:22 +02:00
migr-blocker.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
monitor-core.c monitor: Make current monitor a per-coroutine property 2020-10-09 07:08:19 +02:00
monitor.c hmp: Fail gracefully if chardev is already in use 2020-03-06 17:21:28 +01:00
pci-bus.c stubs: add pci_create_simple 2020-07-06 17:01:11 +02:00
pci-host-piix.c hw/pci-host/piix: Move i440FX declarations to hw/pci-host/i440fx.h 2019-11-05 23:33:12 +01:00
qemu-timer-notify-cb.c cpu-timers, icount: new modules 2020-10-05 16:41:22 +02:00
qmp_memory_device.c qom/object: Move Object typedef to 'qemu/typedefs.h' 2020-06-10 12:09:36 -04:00
qtest.c cpu-timers, icount: new modules 2020-10-05 16:41:22 +02:00
ram-block.c exec: Change RAMBlockIterFunc definition 2019-03-06 10:49:17 +00:00
ramfb.c Revert "hw/display/ramfb: initialize fw-config space with xres/ yres" 2020-05-18 15:42:34 +02:00
replay-user.c replay: add BH oneshot event for block layer 2019-10-14 17:12:48 +02:00
replay.c gdbstub: add reverse continue support in replay mode 2020-10-06 08:34:49 +02:00
runstate-check.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
semihost.c semihosting: add qemu_semihosting_console_inc for SYS_READC 2020-01-09 11:41:29 +00:00
set-fd-handler.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sysbus.c stubs: Clean up includes 2016-02-04 17:01:04 +00:00
target-get-monitor-def.c Clean up includes some more 2016-03-22 22:20:16 +01:00
target-monitor-defs.c Clean up includes some more 2016-03-22 22:20:16 +01:00
tpm.c Revert "tpm: Clean up error reporting in tpm_init_tpmdev()" 2020-07-24 12:44:13 -04:00
trace-control.c trace: remove global 'uint16 dstate[]' array 2016-10-12 09:35:54 +02:00
uuid.c qapi: Restrict query-uuid command to machine code 2020-09-29 15:41:35 +02:00
vm-stop.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
vmgenid.c qapi: Restrict query-vm-generation-id command to machine code 2020-09-29 15:41:35 +02:00
vmstate.c migration: Change SaveStateEntry.instance_id into uint32_t 2020-01-20 09:10:23 +01:00
win32-kbd-hook.c ui/win32-kbd-hook: handle AltGr in a hook procedure 2020-05-19 09:06:44 +02:00
xen-hw-stub.c hw/xen: Split x86-specific declaration from generic hardware ones 2020-09-30 19:11:36 +02:00