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* directory: remove redundant sanitizePathDupEric Wong2008-09-291-15/+7
| | | | | | | We already sanitize and duplicated our paths before calling updateInit() to get pre-pthread_create() error-checking along with heap allocation reduction because we don't have to redupe because our parent stack went away.
* update: move path sanitation up the stack to avoid extra copiesEric Wong2008-09-291-12/+26
| | | | | | | | | | | | | | Remove yet another use of our old malloc-happy linked list implementation and replace it with a simple array of strings. This also implements more eager error handling of invalid paths (still centralized in updateInit) so we can filter out bad paths before we spawn a thread. This also does its part to fix the "update" command inside list mode which lost its static variable in ada24f9a921ff95d874195acf253b5a9dd12213d (although it was broken and requires the fix in 769939b62f7557f8e7c483223d68a8b39af43e37, too).
* clean up updateInit calling and error handlingEric Wong2008-09-281-8/+4
| | | | | Move error reporting to command.c so directory.c does not deal with client error handling any more.
* directory: isRootDirectory() is a one-linerEric Wong2008-09-281-4/+1
| | | | Improving the signal to noise ratio...
* directory: writeDirectoryInfo propagates errorsEric Wong2008-09-281-28/+19
| | | | | If a write failed, it's a good sign subsequent writes will fail, too, so propgate errors all the way up the stack.
* directory: make it clear that DIRECTORY_MTIME is deprecatedEric Wong2008-09-281-1/+1
| | | | A long time ago in an mpd far away...
* directory: remove "Mp3" referencesEric Wong2008-09-281-17/+17
| | | | | MPD has supported more audio formats than just MP3 for over five years...
* directory: remove shortname arguments everywhereEric Wong2008-09-281-79/+40
| | | | | | It was a huge confusing mess of parameter passing around and around. Add a few extra assertions to ensure we're handling parent/child relationships properly.
* directory: replace DirectoryList with dirvecEric Wong2008-09-281-195/+96
| | | | | Small memory reduction compared to songvec since most users have much fewer dirs than songs, but still nice to have.
* directory: remove unused CPP definesEric Wong2008-09-281-4/+0
| | | | We no longer for for updates
* songvec_free => songvec_destroyEric Wong2008-09-281-1/+1
| | | | | "free" implies the songvec structure itself is freed, which is not the case.
* directory.c: kill unnecessary includesEric Wong2008-09-281-4/+0
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* directory: update playlist version if updatedEric Wong2008-09-281-1/+6
| | | | | | | | | | | | If we updated the mpd metadata database; then there's a chance some of those songs in the playlist will have updated metadata. So be on the safe side and increment the playlist version number if _any_ song changed (this is how all released versions of mpd did it, too). This bug was introduced recently when making "update" threaded. Thanks to stonecrest for the bug report.
* Revert "directory: serialize freeSong() within the main thread"Eric Wong2008-09-231-9/+1
| | | | | | | | This reverts commit efefaee1f9535012be2fbfea8f0f870904daad5d. Conflicts: src/directory.c
* directory: use songvec_free to prevent memory leaks.Eric Wong2008-09-231-2/+1
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* directory: fix leak introduced with threaded updateEric Wong2008-09-231-1/+1
| | | | | Use freeList() instead of free() to free all elements in the list.
* directory: serialize freeSong() within the main threadEric Wong2008-09-231-1/+10
| | | | | | | | | | | | | | | | | | It's possible the playlist will be accessing a song that is to be freed in the update thread. Rather than going through the complexity (and potential to make mistakes) of locking the playlist (as well as losing CPU cycles/pipelining due to barriers with mutexes), we'll just line up all songs to be freed in the main thread. It's relatively uncommon to call freeSong() heavily (as it is to update); so the extra, temporary memory usage won't be very noticeable. Additionally, if a song is renamed and it contains unique tag item; this has the additional side effect of preventing unnecessary fragmentation where an item is freed and shortly reallocated.
* Remove EINTR checking for open(2)Eric Wong2008-09-221-2/+1
| | | | open(2) should only interrupt on "slow" devices, afaik...
* directory: don't leak file handles if we get a corrupt dbEric Wong2008-09-221-1/+1
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* Merge branch 'ew/directory'Eric Wong2008-09-221-177/+96
|\ | | | | | | | | | | | | * ew/directory: songvec: remove songvec_prune directory: update do its work inside a thread directory: use enum update_return for return values
| * directory: update do its work inside a threadEric Wong2008-09-221-108/+50
| | | | | | | | | | | | | | | | | | A lot of the preparation was needed (and done in previous months) in making update thread-safe, but here it is. This was the first thing I made work inside a thread when I started mpd-uclinux many years ago, and also the last thing I've done in mainline mpd to work inside a thread, go figure.
| * directory: use enum update_return for return valuesEric Wong2008-09-221-72/+49
| | | | | | | | This way we avoid having to document -1, 0, 1
* | Merge branch 'ew/directory'Eric Wong2008-09-201-119/+105
|\| | | | | | | | | | | | | | | | | | | * ew/directory: Don't try to prune unless we're updating workaround race condition on updates with broken signal blocking Replace SongList with struct songvec directory: remove unused updateMp3Directory() function start using prefixcmp() Add prefixcmp() (stol^H^H^H^Hborrowed from git)
| * workaround race condition on updates with broken signal blockingEric Wong2008-09-201-39/+50
| | | | | | | | | | | | | | | | | | pthreads with our existing signal blocking/handling is broken, for now just sleep a bit in the child to prevent the CHLD handler from being called too early. Also, improve error reporting when handling SIGCHLD by storing the status to be called in the main task (which can be logged, since we can't do logging inside the sig handler).
| * Replace SongList with struct songvecEric Wong2008-09-201-47/+47
| | | | | | | | | | | | | | Our linked-list implementation is wasteful and the SongList isn't modified enough to benefit from being a linked list. So use a more compact array of song pointers which saves ~200K on a library with ~9K songs (on x86-32).
| * directory: remove unused updateMp3Directory() functionEric Wong2008-09-201-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | It hasn't been used in many years commit 3a89afdd80f228139554372a83a9d74486acf691 Author: Warren Dukes <warren.dukes@gmail.com> Date: Sat Nov 20 20:28:32 2004 +0000 remove --update-db option (SVN r2719)
| * start using prefixcmp()Eric Wong2008-09-201-15/+8
| | | | | | | | | | LOC reduction and less noise makes things easier for tired old folks to follow.
* | Oops, open() with O_CREAT is nicer with a modeEric Wong2008-09-201-1/+1
|/ | | | Respect the user's umask (and the number of the beast!)
* Move away from fprintf() when writing DB/state_fileEric Wong2008-09-181-16/+21
| | | | | | | | | I have serious trust issues when using stdio to write to the FS. So it's best to clean this code out so I can start figuring out what's wrong with Rasi's box not updating... None of these writes take place in a performance-critical setting anyways...
* Directory: don't allocate stat information dynamicallyEric Wong2008-09-181-44/+19
| | | | | | | This should save a few thousand ops. Not worth it to malloc for such a small (3-words on 32-bit ARM and x86) structures. Signed-off-by: Eric Wong <normalperson@yhbt.net>
* Merge branch 'mk/client'Eric Wong2008-09-091-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * mk/client: (24 commits) client: reorder function declarations client: check "expired" after command execution client: added global "expired" flag client: removed superfluous assertion client: more assertions client: moved code to sockaddr_to_tmp_string() client: replace "expired" flag with fd==-1 client: moved "expired" accesses into inline function client: no while loop in client_manager_io() client: select() errors are fatal client: use client_defer_output() in client_write() client: moved code to client_write() client: client_defer_output() can create the first defer buffer client: return early on error in client_defer_output() client: moved code to client_defer_output() client: don't free client resources except in client_close() client: allocate clients dynamically client: added function client_by_fd() client: return early in client_new() client: renamed all public functions ...
| * client: renamed all public functionsMax Kellermann2008-09-011-1/+1
| | | | | | | | | | | | Functions which operate on the whole client list are prefixed with "client_manager_", and functions which handle just one client just get "client_".
| * renamed interface.c to client.cMax Kellermann2008-09-011-1/+1
| | | | | | | | | | | | | | I don't believe "interface" is a good name for something like "connection by a client to MPD", let's call it "client". This is the first patch in the series which changes the name, beginning with the file name.
* | directory: printDirectoryInfo() does not call commandError()Max Kellermann2008-09-091-3/+1
| | | | | | | | Move another ocurrence of error handling over to command.c.
* | directory: don't pass fd to traverseAllIn()Max Kellermann2008-09-091-7/+5
| | | | | | | | | | | | | | | | This patch continues the work of the previous patch: don't pass a file descriptor at all to traverseAllIn(). Since this fd was only used to report "directory not found" errors, we can easily move that check to the caller. This is a great relief, since it removes the dependency on a client connection from a lot of enumeration functions.
* | directory: don't pass fd to traverseAllIn() callbacksMax Kellermann2008-09-091-12/+11
| | | | | | | | | | | | | | | | | | | | Database traversal should be generic, and not bound to a client connection. This is the first step: no file descriptor for the callback functions forEachSong() and forEachDir(). If a callback needs the file descriptor, it has to be passed in the void*data pointer somehow; some callbacks might need a new struct for passing more than one parameter. This might look a bit cumbersome right now, but our goal is to have a clean API.
* | dbUtils, playlist, directory: pass constant pointersMax Kellermann2008-09-091-2/+2
| | | | | | | | The usual bunch of const pointer conversions.
* | tag: static directory nameMax Kellermann2008-09-021-5/+3
|/ | | | | | While parsing the tag cache, don't allocate the directory name from the heap, but copy it into a buffer on the stack. This reduces heap fragmentation by 1%.
* include cleanupMax Kellermann2008-08-311-0/+1
| | | | Only include headers which are really needed.
* clean up CPP includesMax Kellermann2008-04-121-6/+2
| | | | | | | | | Try to only include headers which are really needed. We should particularly check all "headers including other headers". The long-term goal is to have a manageable, small API for plugins (decoders, output) without so many mpd internals cluttering the namespace. git-svn-id: https://svn.musicpd.org/mpd/trunk@7319 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Initial cut of fork() => pthreads() for decoder and playerEric Wong2008-04-121-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I initially started to do a heavy rewrite that changed the way processes communicated, but that was too much to do at once. So this change only focuses on replacing the player and decode processes with threads and using condition variables instead of polling in loops; so the changeset itself is quiet small. * The shared output buffer variables will still need locking to guard against race conditions. So in this effect, we're probably just as buggy as before. The reduced context-switching overhead of using threads instead of processes may even make bugs show up more or less often... * Basic functionality appears to be working for playing local (and NFS) audio, including: play, pause, stop, seek, previous, next, and main playlist editing * I haven't tested HTTP streams yet, they should work. * I've only tested ALSA and Icecast. ALSA works fine, Icecast metadata seems to get screwy at times and breaks song advancement in the playlist at times. * state file loading works, too (after some last-minute hacks with non-blocking wakeup functions) * The non-blocking (*_nb) variants of the task management functions are probably overused. They're more lenient and easier to use because much of our code is still based on our previous polling-based system. * It currently segfaults on exit. I haven't paid much attention to the exit/signal-handling routines other than ensuring it compiles. At least the state file seems to work. We don't do any cleanups of the threads on exit, yet. * Update is still done in a child process and not in a thread. To do this in a thread, we'll need to ensure it does proper locking and communication with the main thread; but should require less memory in the end because we'll be updating the database "in-place" rather than updating a copy and then bulk-loading when done. * We're more sensitive to bugs in 3rd party libraries now. My plan is to eventually use a master process which forks() and restarts the child when it dies: locking and communication with the main thread; but should require less memory in the end because we'll be updating the database "in-place" rather than updating a copy and then bulk-loading when done. * We're more sensitive to bugs in 3rd party libraries now. My plan is to eventually use a master process which forks() and restarts the child when it dies: master - just does waitpid() + fork() in a loop \- main thread \- decoder thread \- player thread At the beginning of every song, the main thread will set a dirty flag and update the state file. This way, if we encounter a song that triggers a segfault killing the main thread, the master will start the replacement main on the next song. * The main thread still wakes up every second on select() to check for signals; which affects power management. [merged r7138 from branches/ew] git-svn-id: https://svn.musicpd.org/mpd/trunk@7240 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fix -Wconst warningsMax Kellermann2008-02-051-30/+38
| | | | | | [ew: cleaned up the dirty union hack a bit] Signed-off-by: Eric Wong <normalperson@yhbt.net> git-svn-id: https://svn.musicpd.org/mpd/trunk@7180 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fixed -Wshadow warningsMax Kellermann2008-01-261-14/+14
| | | | | Signed-off-by: Eric Wong <normalperson@yhbt.net> git-svn-id: https://svn.musicpd.org/mpd/trunk@7143 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fixed invalid C prototypesMax Kellermann2008-01-261-1/+1
| | | | | Signed-off-by: Eric Wong <normalperson@yhbt.net> git-svn-id: https://svn.musicpd.org/mpd/trunk@7142 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* directory: allow db_file to reside on / once againEric Wong2008-01-031-0/+2
| | | | | | Oops!, I went back and documented the change going to parent_path(), but forgot to change the code that was affected by it. git-svn-id: https://svn.musicpd.org/mpd/trunk@7131 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Cleanup #includes of standard system headers and put them in one placeEric Wong2008-01-031-5/+0
| | | | | | | | | | | | | This will make refactoring features easier, especially now that pthreads support and larger refactorings are on the horizon. Hopefully, this will make porting to other platforms (even non-UNIX-like ones for masochists) easier, too. os_compat.h will house all the #includes for system headers considered to be the "core" of MPD. Headers for optional features will be left to individual source files. git-svn-id: https://svn.musicpd.org/mpd/trunk@7130 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* directory.c: get rid of the horrid dirname(3) and libgen.h dependencyEric Wong2008-01-031-13/+3
| | | | | | | | | Ok, so basename(3) is even more brain-damaged, inconsistent and/or broken than dirname(3) on most systems, but there are broken implementations of it out there. Just use our already existing internal parent_path() function instead and get rid of the only place where we look for libgen.h. git-svn-id: https://svn.musicpd.org/mpd/trunk@7129 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Merge branches/ew r7104Eric Wong2007-12-281-139/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | thread-safety work in preparation for rewrite to use pthreads Expect no regressions against trunk (r7078), possibly minor performance improvements in update (due to fewer heap allocations), but increased stack usage. Applied the following patches: * maxpath_str for reentrancy (temporary fix, reverted) * path: start working on thread-safe variants of these methods * Re-entrancy work on path/character-set conversions * directory.c: exploreDirectory() use reentrant functions here * directory/update: more use of reentrant functions + cleanups * string_toupper: a strdup-less version of strDupToUpper * get_song_url: a static-variable-free version of getSongUrl() * Use reentrant/thread-safe get_song_url everywhere * replace rmp2amp with the reentrant version, rmp2amp_r * Get rid of the non-reentrant/non-thread-safe rpp2app, too. * buffer2array: assert strdup() returns a usable value in unit tests * replace utf8ToFsCharset and fsCharsetToUtf8 with thread-safe variants * fix storing playlists w/o absolute paths * parent_path(), a reentrant version of parentPath() * parentPath => parent_path for reentrancy and thread-safety * allow "make test" to automatically run embedded unit tests * remove convStrDup() and maxpath_str() * use MPD_PATH_MAX everywhere instead of MAXPATHLEN * path: get rid of appendSlash, pfx_path and just use pfx_dir * get_song_url: fix the ability to play songs in the top-level music_directory git-svn-id: https://svn.musicpd.org/mpd/trunk@7106 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* removing debug messages from signal handlersJ. Alexander Treuman2007-08-271-6/+8
| | | | | | | | | As unfortunate as it is to remove such useful debugging messages, it's necessary to fix a potential deadlock with signal handling. A bunch of functions the debug functions call aren't safe to call from a signal handler. There are some alternate solutions, but they're neither pretty nor simple. So just remove them entirely for now. git-svn-id: https://svn.musicpd.org/mpd/trunk@6828 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Extra debug outputQball Cow2007-07-161-3/+16
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@6689 09075e82-0dd4-0310-85a5-a0d7c8717e4f
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