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819c28bf8c
pacman/lib/libalpm/handle.c
Dan McGee 819c28bf8c Only compile delta regex once 
This reduces the number of regcomp() calls when parsing delta entries in
the database from once per entry to once for the entire context handle
by storing the compiled regex data on the handle itself. Just as we do
with the cURL handle, we initialize it the first time it is needed and
free it when releasing the handle.

A few other small tweaks to the parsing function also take place,
including using the stack to store the transient and short file size
string while parsing it.

When parsing a sync database with 1378 delta entries, this reduces the
time of a `pacman -Sl deltas` operation by 50% from 0.22s to 0.12s.

Signed-off-by: Dan McGee <dan@archlinux.org>
2012-01-02 12:55:55 -06:00

635 lines
14 KiB
C
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/*
* handle.c
*
* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
* Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include <syslog.h>
#include <sys/stat.h>
#include <fcntl.h>
/* libalpm */
#include "handle.h"
#include "alpm_list.h"
#include "util.h"
#include "log.h"
#include "delta.h"
#include "trans.h"
#include "alpm.h"
alpm_handle_t *_alpm_handle_new(void)
{
alpm_handle_t *handle;
CALLOC(handle, 1, sizeof(alpm_handle_t), return NULL);
return handle;
}
void _alpm_handle_free(alpm_handle_t *handle)
{
if(handle == NULL) {
return;
}
/* close logfile */
if(handle->logstream) {
fclose(handle->logstream);
handle->logstream= NULL;
}
if(handle->usesyslog) {
handle->usesyslog = 0;
closelog();
}
#ifdef HAVE_LIBCURL
/* release curl handle */
curl_easy_cleanup(handle->curl);
#endif
regfree(&handle->delta_regex);
/* free memory */
_alpm_trans_free(handle->trans);
FREE(handle->root);
FREE(handle->dbpath);
FREELIST(handle->cachedirs);
FREE(handle->logfile);
FREE(handle->lockfile);
FREE(handle->arch);
FREE(handle->gpgdir);
FREELIST(handle->dbs_sync);
FREELIST(handle->noupgrade);
FREELIST(handle->noextract);
FREELIST(handle->ignorepkg);
FREELIST(handle->ignoregroup);
FREE(handle);
}
/** Lock the database */
int _alpm_handle_lock(alpm_handle_t *handle)
{
int fd;
char *dir, *ptr;
ASSERT(handle->lockfile != NULL, return -1);
ASSERT(handle->lckstream == NULL, return 0);
/* create the dir of the lockfile first */
dir = strdup(handle->lockfile);
ptr = strrchr(dir, '/');
if(ptr) {
*ptr = '\0';
}
if(_alpm_makepath(dir)) {
FREE(dir);
return -1;
}
FREE(dir);
do {
fd = open(handle->lockfile, O_WRONLY | O_CREAT | O_EXCL, 0000);
} while(fd == -1 && errno == EINTR);
if(fd >= 0) {
FILE *f = fdopen(fd, "w");
fprintf(f, "%ld\n", (long)getpid());
fflush(f);
fsync(fd);
handle->lckstream = f;
return 0;
}
return -1;
}
/** Remove a lock file */
int _alpm_handle_unlock(alpm_handle_t *handle)
{
ASSERT(handle->lockfile != NULL, return -1);
ASSERT(handle->lckstream != NULL, return 0);
fclose(handle->lckstream);
handle->lckstream = NULL;
if(unlink(handle->lockfile) && errno != ENOENT) {
return -1;
}
return 0;
}
alpm_cb_log SYMEXPORT alpm_option_get_logcb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->logcb;
}
alpm_cb_download SYMEXPORT alpm_option_get_dlcb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->dlcb;
}
alpm_cb_fetch SYMEXPORT alpm_option_get_fetchcb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->fetchcb;
}
alpm_cb_totaldl SYMEXPORT alpm_option_get_totaldlcb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->totaldlcb;
}
alpm_cb_event SYMEXPORT alpm_option_get_eventcb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->eventcb;
}
alpm_cb_question SYMEXPORT alpm_option_get_questioncb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->questioncb;
}
alpm_cb_progress SYMEXPORT alpm_option_get_progresscb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->progresscb;
}
const char SYMEXPORT *alpm_option_get_root(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->root;
}
const char SYMEXPORT *alpm_option_get_dbpath(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->dbpath;
}
alpm_list_t SYMEXPORT *alpm_option_get_cachedirs(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->cachedirs;
}
const char SYMEXPORT *alpm_option_get_logfile(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->logfile;
}
const char SYMEXPORT *alpm_option_get_lockfile(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->lockfile;
}
const char SYMEXPORT *alpm_option_get_gpgdir(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->gpgdir;
}
int SYMEXPORT alpm_option_get_usesyslog(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return -1);
return handle->usesyslog;
}
alpm_list_t SYMEXPORT *alpm_option_get_noupgrades(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->noupgrade;
}
alpm_list_t SYMEXPORT *alpm_option_get_noextracts(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->noextract;
}
alpm_list_t SYMEXPORT *alpm_option_get_ignorepkgs(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->ignorepkg;
}
alpm_list_t SYMEXPORT *alpm_option_get_ignoregroups(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->ignoregroup;
}
const char SYMEXPORT *alpm_option_get_arch(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->arch;
}
int SYMEXPORT alpm_option_get_usedelta(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return -1);
return handle->usedelta;
}
int SYMEXPORT alpm_option_get_checkspace(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return -1);
return handle->checkspace;
}
alpm_db_t SYMEXPORT *alpm_option_get_localdb(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->db_local;
}
alpm_list_t SYMEXPORT *alpm_option_get_syncdbs(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return NULL);
return handle->dbs_sync;
}
int SYMEXPORT alpm_option_set_logcb(alpm_handle_t *handle, alpm_cb_log cb)
{
CHECK_HANDLE(handle, return -1);
handle->logcb = cb;
return 0;
}
int SYMEXPORT alpm_option_set_dlcb(alpm_handle_t *handle, alpm_cb_download cb)
{
CHECK_HANDLE(handle, return -1);
handle->dlcb = cb;
return 0;
}
int SYMEXPORT alpm_option_set_fetchcb(alpm_handle_t *handle, alpm_cb_fetch cb)
{
CHECK_HANDLE(handle, return -1);
handle->fetchcb = cb;
return 0;
}
int SYMEXPORT alpm_option_set_totaldlcb(alpm_handle_t *handle, alpm_cb_totaldl cb)
{
CHECK_HANDLE(handle, return -1);
handle->totaldlcb = cb;
return 0;
}
int SYMEXPORT alpm_option_set_eventcb(alpm_handle_t *handle, alpm_cb_event cb)
{
CHECK_HANDLE(handle, return -1);
handle->eventcb = cb;
return 0;
}
int SYMEXPORT alpm_option_set_questioncb(alpm_handle_t *handle, alpm_cb_question cb)
{
CHECK_HANDLE(handle, return -1);
handle->questioncb = cb;
return 0;
}
int SYMEXPORT alpm_option_set_progresscb(alpm_handle_t *handle, alpm_cb_progress cb)
{
CHECK_HANDLE(handle, return -1);
handle->progresscb = cb;
return 0;
}
static char *canonicalize_path(const char *path) {
char *new_path;
size_t len;
/* verify path ends in a '/' */
len = strlen(path);
if(path[len - 1] != '/') {
len += 1;
}
CALLOC(new_path, len + 1, sizeof(char), return NULL);
strcpy(new_path, path);
new_path[len - 1] = '/';
return new_path;
}
alpm_errno_t _alpm_set_directory_option(const char *value,
char **storage, int must_exist)
{
struct stat st;
char *real = NULL;
const char *path;
path = value;
if(!path) {
return ALPM_ERR_WRONG_ARGS;
}
if(must_exist) {
if(stat(path, &st) == -1 || !S_ISDIR(st.st_mode)) {
return ALPM_ERR_NOT_A_DIR;
}
CALLOC(real, PATH_MAX, sizeof(char), return ALPM_ERR_MEMORY);
if(!realpath(path, real)) {
free(real);
return ALPM_ERR_NOT_A_DIR;
}
path = real;
}
if(*storage) {
FREE(*storage);
}
*storage = canonicalize_path(path);
if(!*storage) {
return ALPM_ERR_MEMORY;
}
free(real);
return 0;
}
int SYMEXPORT alpm_option_add_cachedir(alpm_handle_t *handle, const char *cachedir)
{
char *newcachedir;
CHECK_HANDLE(handle, return -1);
ASSERT(cachedir != NULL, RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1));
/* don't stat the cachedir yet, as it may not even be needed. we can
* fail later if it is needed and the path is invalid. */
newcachedir = canonicalize_path(cachedir);
if(!newcachedir) {
RET_ERR(handle, ALPM_ERR_MEMORY, -1);
}
handle->cachedirs = alpm_list_add(handle->cachedirs, newcachedir);
_alpm_log(handle, ALPM_LOG_DEBUG, "option 'cachedir' = %s\n", newcachedir);
return 0;
}
int SYMEXPORT alpm_option_set_cachedirs(alpm_handle_t *handle, alpm_list_t *cachedirs)
{
alpm_list_t *i;
CHECK_HANDLE(handle, return -1);
if(handle->cachedirs) {
FREELIST(handle->cachedirs);
}
for(i = cachedirs; i; i = i->next) {
int ret = alpm_option_add_cachedir(handle, i->data);
if(ret) {
return ret;
}
}
return 0;
}
int SYMEXPORT alpm_option_remove_cachedir(alpm_handle_t *handle, const char *cachedir)
{
char *vdata = NULL;
char *newcachedir;
CHECK_HANDLE(handle, return -1);
ASSERT(cachedir != NULL, RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1));
newcachedir = canonicalize_path(cachedir);
if(!newcachedir) {
RET_ERR(handle, ALPM_ERR_MEMORY, -1);
}
handle->cachedirs = alpm_list_remove_str(handle->cachedirs, newcachedir, &vdata);
FREE(newcachedir);
if(vdata != NULL) {
FREE(vdata);
return 1;
}
return 0;
}
int SYMEXPORT alpm_option_set_logfile(alpm_handle_t *handle, const char *logfile)
{
char *oldlogfile = handle->logfile;
CHECK_HANDLE(handle, return -1);
if(!logfile) {
handle->pm_errno = ALPM_ERR_WRONG_ARGS;
return -1;
}
handle->logfile = strdup(logfile);
/* free the old logfile path string, and close the stream so logaction
* will reopen a new stream on the new logfile */
if(oldlogfile) {
FREE(oldlogfile);
}
if(handle->logstream) {
fclose(handle->logstream);
handle->logstream = NULL;
}
_alpm_log(handle, ALPM_LOG_DEBUG, "option 'logfile' = %s\n", handle->logfile);
return 0;
}
int SYMEXPORT alpm_option_set_gpgdir(alpm_handle_t *handle, const char *gpgdir)
{
CHECK_HANDLE(handle, return -1);
if(!gpgdir) {
handle->pm_errno = ALPM_ERR_WRONG_ARGS;
return -1;
}
if(handle->gpgdir) {
FREE(handle->gpgdir);
}
handle->gpgdir = strdup(gpgdir);
_alpm_log(handle, ALPM_LOG_DEBUG, "option 'gpgdir' = %s\n", handle->gpgdir);
return 0;
}
int SYMEXPORT alpm_option_set_usesyslog(alpm_handle_t *handle, int usesyslog)
{
CHECK_HANDLE(handle, return -1);
handle->usesyslog = usesyslog;
return 0;
}
int SYMEXPORT alpm_option_add_noupgrade(alpm_handle_t *handle, const char *pkg)
{
CHECK_HANDLE(handle, return -1);
handle->noupgrade = alpm_list_add(handle->noupgrade, strdup(pkg));
return 0;
}
int SYMEXPORT alpm_option_set_noupgrades(alpm_handle_t *handle, alpm_list_t *noupgrade)
{
CHECK_HANDLE(handle, return -1);
if(handle->noupgrade) FREELIST(handle->noupgrade);
handle->noupgrade = alpm_list_strdup(noupgrade);
return 0;
}
int SYMEXPORT alpm_option_remove_noupgrade(alpm_handle_t *handle, const char *pkg)
{
char *vdata = NULL;
CHECK_HANDLE(handle, return -1);
handle->noupgrade = alpm_list_remove_str(handle->noupgrade, pkg, &vdata);
if(vdata != NULL) {
FREE(vdata);
return 1;
}
return 0;
}
int SYMEXPORT alpm_option_add_noextract(alpm_handle_t *handle, const char *pkg)
{
CHECK_HANDLE(handle, return -1);
handle->noextract = alpm_list_add(handle->noextract, strdup(pkg));
return 0;
}
int SYMEXPORT alpm_option_set_noextracts(alpm_handle_t *handle, alpm_list_t *noextract)
{
CHECK_HANDLE(handle, return -1);
if(handle->noextract) FREELIST(handle->noextract);
handle->noextract = alpm_list_strdup(noextract);
return 0;
}
int SYMEXPORT alpm_option_remove_noextract(alpm_handle_t *handle, const char *pkg)
{
char *vdata = NULL;
CHECK_HANDLE(handle, return -1);
handle->noextract = alpm_list_remove_str(handle->noextract, pkg, &vdata);
if(vdata != NULL) {
FREE(vdata);
return 1;
}
return 0;
}
int SYMEXPORT alpm_option_add_ignorepkg(alpm_handle_t *handle, const char *pkg)
{
CHECK_HANDLE(handle, return -1);
handle->ignorepkg = alpm_list_add(handle->ignorepkg, strdup(pkg));
return 0;
}
int SYMEXPORT alpm_option_set_ignorepkgs(alpm_handle_t *handle, alpm_list_t *ignorepkgs)
{
CHECK_HANDLE(handle, return -1);
if(handle->ignorepkg) FREELIST(handle->ignorepkg);
handle->ignorepkg = alpm_list_strdup(ignorepkgs);
return 0;
}
int SYMEXPORT alpm_option_remove_ignorepkg(alpm_handle_t *handle, const char *pkg)
{
char *vdata = NULL;
CHECK_HANDLE(handle, return -1);
handle->ignorepkg = alpm_list_remove_str(handle->ignorepkg, pkg, &vdata);
if(vdata != NULL) {
FREE(vdata);
return 1;
}
return 0;
}
int SYMEXPORT alpm_option_add_ignoregroup(alpm_handle_t *handle, const char *grp)
{
CHECK_HANDLE(handle, return -1);
handle->ignoregroup = alpm_list_add(handle->ignoregroup, strdup(grp));
return 0;
}
int SYMEXPORT alpm_option_set_ignoregroups(alpm_handle_t *handle, alpm_list_t *ignoregrps)
{
CHECK_HANDLE(handle, return -1);
if(handle->ignoregroup) FREELIST(handle->ignoregroup);
handle->ignoregroup = alpm_list_strdup(ignoregrps);
return 0;
}
int SYMEXPORT alpm_option_remove_ignoregroup(alpm_handle_t *handle, const char *grp)
{
char *vdata = NULL;
CHECK_HANDLE(handle, return -1);
handle->ignoregroup = alpm_list_remove_str(handle->ignoregroup, grp, &vdata);
if(vdata != NULL) {
FREE(vdata);
return 1;
}
return 0;
}
int SYMEXPORT alpm_option_set_arch(alpm_handle_t *handle, const char *arch)
{
CHECK_HANDLE(handle, return -1);
if(handle->arch) FREE(handle->arch);
if(arch) {
handle->arch = strdup(arch);
} else {
handle->arch = NULL;
}
return 0;
}
int SYMEXPORT alpm_option_set_usedelta(alpm_handle_t *handle, int usedelta)
{
CHECK_HANDLE(handle, return -1);
handle->usedelta = usedelta;
return 0;
}
int SYMEXPORT alpm_option_set_checkspace(alpm_handle_t *handle, int checkspace)
{
CHECK_HANDLE(handle, return -1);
handle->checkspace = checkspace;
return 0;
}
int SYMEXPORT alpm_option_set_default_siglevel(alpm_handle_t *handle,
alpm_siglevel_t level)
{
CHECK_HANDLE(handle, return -1);
#ifdef HAVE_LIBGPGME
handle->siglevel = level;
#else
if(level != 0 && level != ALPM_SIG_USE_DEFAULT) {
RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1);
}
#endif
return 0;
}
alpm_siglevel_t SYMEXPORT alpm_option_get_default_siglevel(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return -1);
return handle->siglevel;
}
/* vim: set ts=2 sw=2 noet: */
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