Commit 469638f9 authored by Peter Xu's avatar Peter Xu Committed by Eric Blake
Browse files

qmp: add command "x-oob-test" 



This command is only used to test OOB functionality.  It should not be
used for any other purposes.

Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: default avatarFam Zheng <famz@redhat.com>
Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
Message-Id: <20180309090006.10018-22-peterx@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
[eblake: grammar tweak]
Signed-off-by: default avatarEric Blake <eblake@redhat.com>
parent 3fd2457d

qapi/misc.json

+18 −0
Original line number Diff line number Diff line
@@ -3427,3 +3427,21 @@ 
##

{ 'event': 'COMMAND_DROPPED' ,

  'data': { 'id': 'any', 'reason': 'CommandDropReason' } }



##

# @x-oob-test:

#

# Test OOB functionality.  When sending this command with lock=true,

# it'll try to hang the dispatcher.  When sending it with lock=false,

# it'll try to notify the locked thread to continue.  Note: it should

# only be used by QMP test program rather than anything else.

#

# Since: 2.12

#

# Example:

#

# { "execute": "x-oob-test",

#   "arguments": { "lock": true } }

##

{ 'command': 'x-oob-test', 'data' : { 'lock': 'bool' },

  'allow-oob': true }

qmp.c

+16 −0
Original line number Diff line number Diff line
@@ -770,3 +770,19 @@ MemoryInfo *qmp_query_memory_size_summary(Error **errp) 


    return mem_info;

}



static QemuSemaphore x_oob_test_sem;



static void __attribute__((constructor)) x_oob_test_init(void)

{

    qemu_sem_init(&x_oob_test_sem, 0);

}



void qmp_x_oob_test(bool lock, Error **errp)

{

    if (lock) {

        qemu_sem_wait(&x_oob_test_sem);

    } else {

        qemu_sem_post(&x_oob_test_sem);

    }

}