luite / hfsevents Goto Github PK
View Code? Open in Web Editor NEWHaskell bindings for the OS X FSEvents API - Event based filesystem monitoring
License: BSD 3-Clause "New" or "Revised" License
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hfsevents's Issues
Running out of file descriptors
Is it possible to avoid using a pipe for communicating between C to Haskell? A pipe uses 2 fds. It will be much more scalable if we can do away with those fds.
Haskell stack runs out of fds on OSX while using filewatch via fsnotify. Please see commercialhaskell/stack#1979 .
Version 0.2.0 maintenance/update
The package is (mostly) not broken, but there is some maintenance that can be done:
- add functionality introduced by recent macOS (is there anything that should be added?)
- fix deprecation errors, switch to newer API, potentially drop support for very old macOS versions
- remove
osVersion, this was originally meant only to query for file level events. they have been supported for a very long time now - revisit callback model, having a pipe and a pthread for every watch uses more resources than necessary perhaps, maybe we can do without
Any other requests?
Installation failure
error: unknown type name 'uuid_string_t'; did you mean 'io_string_t'?
Result of:
cabal-dev install -v3 hfsevents > hfsevents-fail.log
Requires cereal < 0.4
You cannot get hfsevents working with ghc 7.7 (soon 7.8) because it requires cereal ==0.3.*, which does not compile with base ==4.7. Allowing cereal-0.4.0.0 and building hfsevents seems to work.
Is there a reason that hfsevents specifies cereal < 0.4? If not, the requirement should be removed so that it works with ghc >= 7.7.
"c_fsevents.o: No such file or directory" build error with GHC 9.8
hfsevents builds for me with GHC 9.6 but not with 9.8. Would anyone have ideas on this error ?
$ stack build hfsevents --stack-yaml stack9.8.yaml
Warning: Stack has not been tested with GHC versions 9.8 and above, and using 9.8.1, this may fail.
hfsevents> configure
hfsevents> Configuring hfsevents-0.1.6...
hfsevents> build
hfsevents> Preprocessing library for hfsevents-0.1.6..
hfsevents> Building library for hfsevents-0.1.6..
hfsevents> [1 of 1] Compiling System.OSX.FSEvents
hfsevents> ar: .stack-work/dist/aarch64-osx/ghc-9.8.1/build/cbits/c_fsevents.o: No such file or directory
Error: [S-7282]
Stack failed to execute the build plan.
While executing the build plan, Stack encountered the error:
[S-7011]
While building package hfsevents-0.1.6 (scroll up to its section to see the error) using:
/Users/simon/.stack/setup-exe-cache/aarch64-osx/Cabal-simple_6HauvNHV_3.10.2.0_ghc-9.8.1 --verbose=1 --builddir=.stack-work/dist/aarch64-osx/ghc-9.8.1 build --ghc-options " -fdiagnostics-color=always"
Process exited with code: ExitFailure 1
Hackage docs
Would you mind manually uploading the documentation for this library to Hackage? Their auto-generated docs fail since this library requires linking to some OS X only code which their build servers don't have.
The easiest way to do it is to use this script.
Thanks.
not detecting files saved by Intellij IDEA ?
Thanks for hfsevents, which is used in hledger-ui via fsnotify. I am seeing events when I save a file from emacs, but not when I save it from IDEA. Here's a log from both.. any ideas ?
module Main where
import System.OSX.FSEvents
import Control.Monad
import Control.Concurrent
main = do
es <- eventStreamCreate ["."] 1.0 True True True print
replicateM 30 (threadDelay 10000000)
putStrLn "destroying event stream"
eventStreamDestroy es
replicateM 30 (threadDelay 10000000)~/src/hledger$ ./hfstest
[EMACS:]
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.#a.j", eventId = 610728226, eventFlags = 262400}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/a.j", eventId = 610728235, eventFlags = 70656}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.#a.j", eventId = 610728238, eventFlags = 262912}
[IDEA:]
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.git/index.lock", eventId = 610728402, eventFlags = 65792}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.git/index.lock", eventId = 610728414, eventFlags = 66304}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/a.j___jb_tmp___", eventId = 610728631, eventFlags = 71936}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/a.j", eventId = 610728635, eventFlags = 83968}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/a.j___jb_old___", eventId = 610728638, eventFlags = 68096}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.idea/workspace.xml___jb_tmp___", eventId = 610728688, eventFlags = 71936}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.idea/workspace.xml", eventId = 610728692, eventFlags = 83968}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.idea/workspace.xml___jb_old___", eventId = 610728695, eventFlags = 68096}
Event {eventPath = "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/.git/index.lock", eventId = 610728701, eventFlags = 66304}
(Also, in that test program, what's the reason for destroying the event stream, and for waiting afterward ?)
warnings & crashes
@mdittmer & I are seeing some issues using this lib. The problem is that it is not 100% reproduceable. I just got these errors when starting up my program, after it creates some watches:
2012-09-03 06:22 watch[86593] (CarbonCore.framework) _createAndAddRunLoopSource(): failed assertion 'streamRef->d2f_port != MACH_PORT_NULL'
2012-09-03 06:22 watch[86593] (CarbonCore.framework) FSEventStreamScheduleWithRunLoop: ERROR: _createAndAddRunLoopSource(...) => (os/kern) failure (5)
2012-09-03 06:22 watch[86593] (CarbonCore.framework) streamRef->cfRunLoopSourceRef != NULL || streamRef->event_source != NULL(): failed assertion: Must call FSEventStreamScheduleWithRunLoop() before calling FSEventStreamStart()
I am also seeing this a little bit after the watches are placed:
zsh: bus error dist/build/watch/watch
Installation error
cabal install hfsevents-0.1.3 causes an error as follows.
My environment is Mac OSX 10.8.2 + Haskell platform 2012.4.0.0
Missing CoreServices.h
When calling
cabal install hfsevents
I get
[1 of 1] Compiling System.OSX.FSEvents ( System/OSX/FSEvents.hs, dist/build/System/OSX/FSEvents.p_o )
cbits/c_fsevents.m:1:39:
error: CoreServices/CoreServices.h: No such file or directory
need to set -pgma clang -pgmc clang on mac
Building hfsevents-0.1.5... Preprocessing library hfsevents-0.1.5... [1 of 1] Compiling System.OSX.FSEvents ( System/OSX/FSEvents.hs, dist/build/System/OSX/FSEvents.o ) gcc-4.8: error: language objective-c not recognized gcc-4.8: error: language objective-c not recognized
if i pass -pgmc clang -pgma clang things work out fine
Fails to load on macOS Big Sur.
$ cabal repl
Build profile: -w ghc-8.8.4 -O1
In order, the following will be built (use -v for more details):
- hfsevents-0.1.6 (lib) (ephemeral targets)
Preprocessing library for hfsevents-0.1.6..
GHCi, version 8.8.4: https://www.haskell.org/ghc/ :? for help
<command line>: user specified .o/.so/.DLL could not be loaded (not found)
Whilst trying to load: (framework) Cocoa
Additional directories searched: (none)
cabal: repl failed for hfsevents-0.1.6.
Build error on Yosemite
Here's output.
[1 of 1] Compiling System.OSX.FSEvents ( System/OSX/FSEvents.hs, dist/build/System/OSX/FSEvents.o )
In file included from /usr/include/os/object.h:75:0:
0,
from /usr/include/dispatch/dispatch.h:48,
from /System/Library/Frameworks/CoreFoundation.framework/Headers/CFStream.h:15,
from /System/Library/Frameworks/CoreFoundation.framework/Headers/CFPropertyList.h:13,
from /System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoundation.h:55,
from /System/Library/Frameworks/CoreServices.framework/Headers/CoreServices.h:19,
from cbits/c_fsevents.m:1:
/usr/include/objc/NSObject.h:22:1:
error: unknown type name 'instancetype'
- (instancetype)self;
^
/usr/include/objc/NSObject.h:36:1:
error: unknown type name 'instancetype'
- (instancetype)retain OBJC_ARC_UNAVAILABLE;
^
/usr/include/objc/NSObject.h:38:1:
error: unknown type name 'instancetype'
- (instancetype)autorelease OBJC_ARC_UNAVAILABLE;
^
/usr/include/objc/NSObject.h:60:1:
error: unknown type name 'instancetype'
- (instancetype)init;
^
/usr/include/objc/NSObject.h:62:1:
error: unknown type name 'instancetype'
+ (instancetype)new;
^
/usr/include/objc/NSObject.h:63:1:
error: unknown type name 'instancetype'
+ (instancetype)allocWithZone:(struct _NSZone *)zone;
^
/usr/include/objc/NSObject.h:64:1:
error: unknown type name 'instancetype'
+ (instancetype)alloc;
^
In file included from /usr/include/dispatch/dispatch.h:51:0:
0,
from /System/Library/Frameworks/CoreFoundation.framework/Headers/CFStream.h:15,
from /System/Library/Frameworks/CoreFoundation.framework/Headers/CFPropertyList.h:13,
from /System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoundation.h:55,
from /System/Library/Frameworks/CoreServices.framework/Headers/CoreServices.h:19,
from cbits/c_fsevents.m:1:
/usr/include/dispatch/object.h:143:15:
error: expected identifier or '(' before '^' token
typedef void (^dispatch_block_t)(void);
^
/usr/include/dispatch/object.h:362:3:
error: unknown type name 'dispatch_block_t'
dispatch_block_t notification_block);
^
cbits/c_fsevents.m: In function 'osVersion':
cbits/c_fsevents.m:106:4:
warning: 'Gestalt' is deprecated (declared at /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Gestalt.h:123) [-Wdeprecated-declarations]
Gestalt(gestaltSystemVersionMajor, majorVersion);
^
cbits/c_fsevents.m:107:4:
warning: 'Gestalt' is deprecated (declared at /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Gestalt.h:123) [-Wdeprecated-declarations]
Gestalt(gestaltSystemVersionMinor, minorVersion);
^
cbits/c_fsevents.m:108:4:
warning: 'Gestalt' is deprecated (declared at /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Gestalt.h:123) [-Wdeprecated-declarations]
Gestalt(gestaltSystemVersionBugFix, bugFixVersion);
^
Failed to install hfsevents-0.1.5
cabal: Error: some packages failed to install:
hfsevents-0.1.5 failed during the building phase. The exception was:
ExitFailure 1
fatal error: 'CoreServices/CoreServices.h' file not found OS X Catalina
I am facing an above issue when running cabal install hfsevents. This is very similar to #3
Error message I get:
Resolving dependencies...
Build profile: -w ghc-8.10.1 -O1
In order, the following will be built (use -v for more details):
- hfsevents-0.1.6 (lib) (requires build)
Starting hfsevents-0.1.6 (lib)
Building hfsevents-0.1.6 (lib)
Failed to build hfsevents-0.1.6.
Build log ( /Users/serhiip/.cabal/logs/ghc-8.10.1/hfsvnts-0.1.6-e6f8b654.log
):
Configuring library for hfsevents-0.1.6..
Preprocessing library for hfsevents-0.1.6..
Building library for hfsevents-0.1.6..
[1 of 1] Compiling System.OSX.FSEvents ( System/OSX/FSEvents.hs, dist/build/System/OSX/FSEvents.o, dist/build/System/OSX/FSEvents.dyn_o )
cbits/c_fsevents.m:1:10: error:
fatal error: 'CoreServices/CoreServices.h' file not found
|
1 | #include <CoreServices/CoreServices.h>
| ^
#include <CoreServices/CoreServices.h>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
`cc' failed in phase `C Compiler'. (Exit code: 1)
cabal: Failed to build hfsevents-0.1.6. See the build log above for details.
I have Xcode freshly installed and I am able to locate header file at /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreServices.framework/Versions/A/Headers/CoreServices.h
but defining this env var (in my .zshrc) like this doesn't help
export CFLAGS="-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreServices.framework/Versions/A/Headers/"
UPD: log of cabal install with -v3 https://pastebin.com/FDygnfQB
Encountering user error (could not create file system event stream)
I'm getting this on OS X 10.12.6 Sierra and it reproduces when running ghcid --command="./hadrian/ghci.sh" on ghc repo as was initially reported here. I'm not sure how to create a smaller reproduction case yet, but I can provide more information if it's not reproducible outside my machine.
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