libvirt/src
Peter Krempa fd06692544 client: Check if other thread claims it has the buck before claiming it.
Originaly, the code checked if another client is the queue and infered
ownership of the buck from that. Commit fa9595003d
added a separate variable to track the buck. That caused, that a new
call might enter claiming it has the buck, while another thread was
signalled to take the buck. This ends in two threads claiming they hold
the buck and entering poll(). This happens due to a race on waking up
threads on the client lock mutex.

This caused multi-threaded clients to hang, most prominently visible and
reproducible on python based clients, like virt-manager.

This patch causes threads, that have been signalled to take the buck to
re-check if buck is held by another thread.
2011-12-02 14:21:40 +01:00
..
conf maint: typo fixes 2011-12-01 16:08:34 -07:00
cpu Add PPC cpu driver. 2011-11-30 12:38:17 -07:00
esx maint: typo fixes 2011-12-01 16:08:34 -07:00
hyperv Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
interface libvirt: do not mix internal flags into public API 2011-07-18 13:50:51 -06:00
libxl Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
locking virLockManagerNopInit: Rename flags to unused_flags 2011-09-27 11:11:14 +02:00
lxc Remove time APIs from src/util/util.h 2011-11-30 11:43:50 +00:00
network bridge_driver: Don't define network if XML contains more IPv4 adreses. 2011-12-01 09:35:43 +01:00
node_device build: drop useless dirent.h includes 2011-11-11 14:12:37 -07:00
nwfilter nwfilter: remove virConnectPtr from internal API calls 2011-11-23 14:13:03 -05:00
openvz Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
phyp Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
qemu Fix a logic error for setting block I/O 2011-12-01 08:01:16 -07:00
remote Add virDomain{Set, Get}BlockIoTune support to the remote driver 2011-11-30 11:36:09 -07:00
rpc client: Check if other thread claims it has the buck before claiming it. 2011-12-02 14:21:40 +01:00
secret secret: add Ceph secret type 2011-10-28 11:34:17 -06:00
security conf: Improve incorrect root element error messages 2011-11-28 15:12:37 +01:00
storage maint: typo fixes 2011-12-01 16:08:34 -07:00
test Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
uml maint: typo fixes 2011-12-01 16:08:34 -07:00
util maint: typo fixes 2011-12-01 16:08:34 -07:00
vbox Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
vmware Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
vmx maint: typo fixes 2011-12-01 16:08:34 -07:00
xen maint: typo fixes 2011-12-01 16:08:34 -07:00
xenapi Fix version numbers for isAlive and setKeepAlive driver APIs 2011-11-24 14:44:59 +01:00
xenxs conf: don't modify cpu set string during parsing 2011-11-21 14:50:28 -07:00
.gitignore Rewrite all the DTrace/SystemTAP probing 2011-10-11 11:26:13 +01:00
datatypes.c virStorageVol: avoid PATH_MAX-sized array 2011-06-22 17:13:58 -06:00
datatypes.h conf: prefer unsigned flags 2011-07-13 17:05:10 -06:00
driver.c libvirt: do not mix internal flags into public API 2011-07-18 13:50:51 -06:00
driver.h Add new API virDomain{Set, Get}BlockIoTune 2011-11-29 17:29:33 -07:00
dtrace2systemtap.pl Add a systemtap script for watching QEMU monitor interactions 2011-10-27 10:42:14 +01:00
fdstream.c virFDStream: close also given errfd (fd leak) 2011-10-13 12:09:48 -06:00
fdstream.h fdstream: drop delete argument 2011-08-02 14:53:43 -06:00
gnutls_1_0_compat.h Fix detection of GnuTLS 1.x.y 2011-08-03 19:22:29 +02:00
internal.h Rewrite all the DTrace/SystemTAP probing 2011-10-11 11:26:13 +01:00
libvirt_daemon.syms Export conditional state driver symbols only when they are defined 2010-03-23 02:05:18 +01:00
libvirt_dbus.syms Fix build on Mingw32 wrt export of virNetServerGetDBusConn 2011-11-21 11:46:52 +00:00
libvirt_driver_modules.syms
libvirt_internal.h Introduce virConnectSetKeepAlive 2011-11-24 11:44:08 +01:00
libvirt_linux.syms
libvirt_network.syms network: provide internal API to return IP of a network 2011-07-25 13:48:55 +08:00
libvirt_nwfilter.syms Some NWFilter symbols are conditional and have to be exported conditional 2010-04-23 19:51:00 +02:00
libvirt_private.syms Remove time APIs from src/util/util.h 2011-11-30 11:43:50 +00:00
libvirt_public.syms Add new API virDomain{Set, Get}BlockIoTune 2011-11-29 17:29:33 -07:00
libvirt_qemu.syms Define a QEMU specific API to attach to a running QEMU process 2011-07-12 15:39:03 +01:00
libvirt_sasl.syms build: fix mingw build without sasl 2011-10-11 16:30:25 -06:00
libvirt_vmx.syms esx: Move VMX handling code out of the driver directory 2010-12-21 22:40:17 +01:00
libvirt_xenxs.syms Fix build with --with-driver-modules enabled 2011-05-27 09:51:28 +02:00
libvirt-qemu.c qemu_api: doc improvements 2011-09-15 13:56:38 -06:00
libvirt.c Fix leak build config file path 2011-11-30 11:43:50 +00:00
libvirt.conf Allow for URI aliases when connecting to libvirt 2011-10-19 09:14:34 +01:00
Makefile.am build: fix 'make dist' without dtrace 2011-12-01 10:15:48 -07:00
nodeinfo.c nodeinfo: Fix incorrect error codes 2011-09-01 17:35:23 +08:00
nodeinfo.h build: avoid ATTRIBUTE_UNUSED in headers 2011-07-14 07:51:30 -06:00
probes.d Implement common keepalive handling 2011-11-24 11:44:08 +01:00
qemu_protocol-structs build: also track RPC on-wire enum values 2011-07-15 17:48:09 -06:00
README hyperv: Add basic documentation 2011-08-26 17:52:55 +02:00
remote_protocol-structs Add virDomain{Set, Get}BlockIoTune support to the remote driver 2011-11-30 11:36:09 -07:00
virkeepaliveprotocol-structs build: Properly generate and check virkeepaliveprotocol-structs 2011-11-24 14:44:04 +01:00
virnetprotocol-structs Extend RPC protocol to allow FD passing 2011-10-28 10:27:15 +01:00

       libvirt library code README
       ===========================

The directory provides the bulk of the libvirt codebase. Everything
except for the libvirtd daemon and client tools. The build uses a
large number of libtool convenience libraries - one for each child
directory, and then links them together for the final libvirt.so,
although some bits get linked directly to libvirtd daemon instead.

The files directly in this directory are supporting the public API
entry points & data structures.

There are two core shared modules to be aware of:

 * util/  - a collection of shared APIs that can be used by any
            code. This directory is always in the include path
            for all things built

 * conf/  - APIs for parsing / manipulating all the official XML
            files used by the public API. This directory is only
            in the include path for driver implementation modules

 * vmx/   - VMware VMX config handling (used by esx/ and vmware/)


Then there are the hypervisor implementations:

 * esx/          - VMware ESX and GSX support using vSphere API over SOAP
 * hyperv/       - Microsoft Hyper-V support using WinRM
 * lxc/          - Linux Native Containers
 * openvz/       - OpenVZ containers using cli tools
 * phyp/         - IBM Power Hypervisor using CLI tools over SSH
 * qemu/         - QEMU / KVM using qemu CLI/monitor
 * remote/       - Generic libvirt native RPC client
 * test/         - A "mock" driver for testing
 * uml/          - User Mode Linux
 * vbox/         - Virtual Box using native API
 * vmware/       - VMware Workstation and Player using the vmrun tool
 * xen/          - Xen using hypercalls, XenD SEXPR & XenStore
 * xenapi/       - Xen using libxenserver


Finally some secondary drivers that are shared for several HVs.
Currently these are used by LXC, OpenVZ, QEMU, UML and Xen drivers.
The ESX, Hyper-V, Power Hypervisor, Remote, Test & VirtualBox drivers all
implement the secondary drivers directly

 * cpu/          - CPU feature management
 * interface/    - Host network interface management
 * network/      - Virtual NAT networking
 * nwfilter/     - Network traffic filtering rules
 * node_device/  - Host device enumeration
 * secret/       - Secret management
 * security/     - Mandatory access control drivers
 * storage/      - Storage management drivers


Since both the hypervisor and secondary drivers can be built as
dlopen()able modules, it is *FORBIDDEN* to have build dependencies
between these directories. Drivers are only allowed to depend on
the public API, and the internal APIs in the util/ and conf/
directories