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Switch to a more extensible annotation system for RPC protocols

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Currently the RPC protocol files can contain annotations after
the protocol enum eg

   REMOTE_PROC_DOMAIN_SNAPSHOT_LIST_CHILDREN_NAMES = 247, /* autogen autogen priority:high */

This is not very extensible as the number of annotations grows.
Change it to use

    /**
     * @generate: both
     * @priority: high
     */
   REMOTE_PROC_DOMAIN_SNAPSHOT_LIST_CHILDREN_NAMES = 247,

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2013-04-17 13:04:27 +01:00
parent fa006c4fdd
commit a98541bfb4
5 changed files with 1854 additions and 421 deletions
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74
src/locking/lock_protocol.x
View File

@ -77,19 +77,69 @@ const VIR_LOCK_SPACE_PROTOCOL_PROGRAM = 0xEA7BEEF;
const VIR_LOCK_SPACE_PROTOCOL_PROGRAM_VERSION = 1;
enum virLockSpaceProtocolProcedure {
/* Each function must have a two-word comment. The first word is
* whether remote_generator.pl handles daemon, the second whether
* it handles src/remote. Additional flags can be specified after a
* pipe.
/* Each function must be preceeded by a comment providing one or
* more annotations:
*
* - @generate: none|client|server|both
*
* Whether to generate the dispatch stubs for the server
* and/or client code.
*
* - @readstream: paramnumber
* - @writestream: paramnumber
*
* The @readstream or @writestream annotations let daemon and src/remote
* create a stream. The direction is defined from the src/remote point
* of view. A readstream transfers data from daemon to src/remote. The
* <paramnumber> specifies at which offset the stream parameter is inserted
* in the function parameter list.
*
* - @priority: low|high
*
* Each API that might eventually access hypervisor's monitor (and thus
* block) MUST fall into low priority. However, there are some exceptions
* to this rule, e.g. domainDestroy. Other APIs MAY be marked as high
* priority. If in doubt, it's safe to choose low. Low is taken as default,
* and thus can be left out.
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_REGISTER = 1, /* skipgen skipgen */
VIR_LOCK_SPACE_PROTOCOL_PROC_RESTRICT = 2, /* skipgen skipgen */
VIR_LOCK_SPACE_PROTOCOL_PROC_NEW = 3, /* skipgen skipgen */
VIR_LOCK_SPACE_PROTOCOL_PROC_CREATE_RESOURCE = 4, /* skipgen skipgen */
VIR_LOCK_SPACE_PROTOCOL_PROC_DELETE_RESOURCE = 5, /* skipgen skipgen */
VIR_LOCK_SPACE_PROTOCOL_PROC_ACQUIRE_RESOURCE = 6, /* skipgen skipgen */
VIR_LOCK_SPACE_PROTOCOL_PROC_RELEASE_RESOURCE = 7, /* skipgen skipgen */
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_REGISTER = 1,
VIR_LOCK_SPACE_PROTOCOL_PROC_CREATE_LOCKSPACE = 8 /* skipgen skipgen */
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_RESTRICT = 2,
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_NEW = 3,
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_CREATE_RESOURCE = 4,
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_DELETE_RESOURCE = 5,
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_ACQUIRE_RESOURCE = 6,
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_RELEASE_RESOURCE = 7,
/**
* @generate: none
*/
VIR_LOCK_SPACE_PROTOCOL_PROC_CREATE_LOCKSPACE = 8
};

39
src/remote/lxc_protocol.x
View File

@ -37,13 +37,34 @@ const LXC_PROGRAM = 0x00068000;
const LXC_PROTOCOL_VERSION = 1;
enum lxc_procedure {
/* Each function must have a three-word comment. The first word is
* whether gendispatch.pl handles daemon, the second whether
* it handles src/remote.
* The last argument describes priority of API. There are two accepted
* values: low, high; Each API that might eventually access hypervisor's
* monitor (and thus block) MUST fall into low priority. However, there
* are some exceptions to this rule, e.g. domainDestroy. Other APIs MAY
* be marked as high priority. If in doubt, it's safe to choose low. */
LXC_PROC_DOMAIN_OPEN_NAMESPACE = 1 /* skipgen skipgen priority:low */
/* Each function must be preceded by a comment providing one or
* more annotations:
*
* - @generate: none|client|server|both
*
* Whether to generate the dispatch stubs for the server
* and/or client code.
*
* - @readstream: paramnumber
* - @writestream: paramnumber
*
* The @readstream or @writestream annotations let daemon and src/remote
* create a stream. The direction is defined from the src/remote point
* of view. A readstream transfers data from daemon to src/remote. The
* <paramnumber> specifies at which offset the stream parameter is inserted
* in the function parameter list.
*
* - @priority: low|high
*
* Each API that might eventually access hypervisor's monitor (and thus
* block) MUST fall into low priority. However, there are some exceptions
* to this rule, e.g. domainDestroy. Other APIs MAY be marked as high
* priority. If in doubt, it's safe to choose low. Low is taken as default,
* and thus can be left out.
*/
/**
* @generate: none
* @priority: low
*/
LXC_PROC_DOMAIN_OPEN_NAMESPACE = 1
};

53
src/remote/qemu_protocol.x
View File

@ -63,15 +63,46 @@ const QEMU_PROGRAM = 0x20008087;
const QEMU_PROTOCOL_VERSION = 1;
enum qemu_procedure {
/* Each function must have a three-word comment. The first word is
* whether gendispatch.pl handles daemon, the second whether
* it handles src/remote.
* The last argument describes priority of API. There are two accepted
* values: low, high; Each API that might eventually access hypervisor's
* monitor (and thus block) MUST fall into low priority. However, there
* are some exceptions to this rule, e.g. domainDestroy. Other APIs MAY
* be marked as high priority. If in doubt, it's safe to choose low. */
QEMU_PROC_MONITOR_COMMAND = 1, /* skipgen skipgen priority:low */
QEMU_PROC_DOMAIN_ATTACH = 2, /* autogen autogen priority:low */
QEMU_PROC_DOMAIN_AGENT_COMMAND = 3 /* autogen autogen priority:low */
/* Each function must be preceded by a comment providing one or
* more annotations:
*
* - @generate: none|client|server|both
*
* Whether to generate the dispatch stubs for the server
* and/or client code.
*
* - @readstream: paramnumber
* - @writestream: paramnumber
*
* The @readstream or @writestream annotations let daemon and src/remote
* create a stream. The direction is defined from the src/remote point
* of view. A readstream transfers data from daemon to src/remote. The
* <paramnumber> specifies at which offset the stream parameter is inserted
* in the function parameter list.
*
* - @priority: low|high
*
* Each API that might eventually access hypervisor's monitor (and thus
* block) MUST fall into low priority. However, there are some exceptions
* to this rule, e.g. domainDestroy. Other APIs MAY be marked as high
* priority. If in doubt, it's safe to choose low. Low is taken as default,
* and thus can be left out.
*/
/**
* @generate: none
* @priority: low
*/
QEMU_PROC_MONITOR_COMMAND = 1,
/**
* @generate: both
* @priority: low
*/
QEMU_PROC_DOMAIN_ATTACH = 2,
/**
* @generate: both
* @priority: low
*/
QEMU_PROC_DOMAIN_AGENT_COMMAND = 3
};

2042
src/remote/remote_protocol.x
View File

File diff suppressed because it is too large Load Diff

67
src/rpc/gendispatch.pl
View File

@ -82,10 +82,11 @@ sub name_to_TypeName {
# Read the input file (usually remote_protocol.x) and form an
# opinion about the name, args and return type of each RPC.
my ($name, $ProcName, $id, $flags, %calls, @calls);
my ($name, $ProcName, $id, $flags, %calls, @calls, %opts);
my $collect_args_members = 0;
my $collect_ret_members = 0;
my $collect_opts = 0;
my $last_name;
open PROTOCOL, "<$protocol" or die "cannot open $protocol: $!";
@ -103,6 +104,19 @@ while (<PROTOCOL>) {
} elsif ($_ =~ m/^\s*(.*\S)\s*$/) {
push(@{$calls{$name}->{ret_members}}, $1);
}
} elsif ($collect_opts) {
if (m,^\s*\*\s*\@(\w+)\s*:\s*(\w+)\s*$,) {
$opts{$1} = $2;
} elsif (m,^\s*\*/\s*$,) {
$collect_opts = 0;
} elsif (m,^\s*\*\s*$,) {
# pass
} else {
die "cannot parse $_";
}
} elsif (m,/\*\*,) {
%opts = ();
$collect_opts = 1;
} elsif (/^struct (${structprefix}_(.*)_args)/ ||
/^struct (${structprefix}(.*)Args)/) {
my $structname = $1;
@ -171,11 +185,10 @@ while (<PROTOCOL>) {
$collect_args_members = 0;
$collect_ret_members = 0;
} elsif (/^\s*(${procprefix}_PROC_(.*?))\s*=\s*(\d+)\s*,?(.*)$/) {
} elsif (/^\s*(${procprefix}_PROC_(.*?))\s*=\s*(\d+)\s*,?\s*$/) {
my $constname = $1;
$name = $2;
$id = $3;
$flags = $4;
$ProcName = name_to_ProcName ($name);
$name = lc $name;
$name =~ s/_//g;
@ -195,41 +208,45 @@ while (<PROTOCOL>) {
$calls{$name}->{constname} = $constname;
if ($opt_b or $opt_k) {
if (!($flags =~ m/^\s*\/\*\s*(\S+)\s+(\S+)\s*(\|.*)?\s+(priority:(\S+))?\s*\*\/\s*$/)) {
die "invalid generator flags '$flags' for $constname"
if (!exists $opts{generate}) {
die "'\@generate' annotation missing for $constname";
}
my $genmode = $opt_b ? $1 : $2;
my $genflags = $3;
my $priority = defined $5 ? $5 : "low";
if ($opts{generate} !~ /^(both|server|client|none)$/) {
die "'\@generate' annotation value '$opts{generate}' invalid";
}
if ($genmode eq "autogen") {
if ($opts{generate} eq "both") {
push(@autogen, $ProcName);
} elsif ($opt_b && ($opts{generate} eq "server")) {
push(@autogen, $ProcName);
} elsif (!$opt_b && ($opts{generate} eq "client")) {
push(@autogen, $ProcName);
} elsif ($genmode eq "skipgen") {
# ignore it
} else {
die "invalid generator flags for ${procprefix}_PROC_${name}"
}
if (defined $genflags and $genflags ne "") {
if ($genflags =~ m/^\|\s*(read|write)stream@(\d+)\s*$/) {
$calls{$name}->{streamflag} = $1;
$calls{$name}->{streamoffset} = int($2);
} else {
die "invalid generator flags for ${procprefix}_PROC_${name}"
}
if (exists $opts{readstream}) {
$calls{$name}->{streamflag} = "read";
$calls{$name}->{streamoffset} = int($opts{readstream});
} elsif (exists $opts{writestream}) {
$calls{$name}->{streamflag} = "write";
$calls{$name}->{streamoffset} = int($opts{writestream});
} else {
$calls{$name}->{streamflag} = "none";
}
# for now, we distinguish only two levels of prioroty:
# low (0) and high (1)
if ($priority eq "high") {
$calls{$name}->{priority} = 1;
} elsif ($priority eq "low") {
$calls{$name}->{priority} = 0;
if (exists $opts{priority}) {
if ($opts{priority} eq "high") {
$calls{$name}->{priority} = 1;
} elsif ($opts{priority} eq "low") {
$calls{$name}->{priority} = 0;
} else {
die "\@priority annotation value '$opts{priority}' invalid for $constname"
}
} else {
die "invalid priority ${priority} for ${procprefix}_PROC_${name}"
$calls{$name}->{priority} = 0;
}
}