digitalmars.D.learn - Changing Name of a thread
- Keywan Ghadami (44/44) Jan 09 2016 Hello, i am trying to the set the name of thread with:
- tcak (19/64) Jan 09 2016 I tried your code with a little addition as follows:
- Keywan Ghadami (7/26) Jan 09 2016 tcak,
Hello, i am trying to the set the name of thread with:
import core.thread;
auto thisThread = Thread.getThis();
thisThread.name = "kiwi";
but GDB prints the name of the programm ("helloworld")
[Thread debugging using libthread_db enabled]
Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
Edit source/app.d to start your project.
^C
Program received signal SIGINT, Interrupt.
D main () at source/app.d:17
17 }
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fd0800 (LWP 3232) "helloworld" D main
() at source/app.d:17
Next thing i tried was calling pthread_setname_np (Linux) but it
seams that is not defined in phobos, so i tried to delcare it by
my self:
import core.sys.posix.pthread;
import std.string;
extern(C) int pthread_setname_np(pthread_t, const char*);
pthread_setname_np(pthread_self(), toStringz("thread_name"));
but this gives me
helloworld ~master: building configuration "application"...
dmd -c
-of.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC54
EAA8E7/helloworld.o -debug -g -w -version=Have_helloworld -Isource/
source/app.d source/kiwi.d -vcolumns
Linking...
dmd
-of.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC
47EAA8E7/helloworld .dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC54
EAA8E7/helloworld.o -L--no-as-needed -g
.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC547
AA8E7/helloworld.o: In function `_Dmain':
/home/keywan/hello_world/source/app.d:13: undefined reference to
`_D3app4mainFZ18pthread_setname_npUmxPaZi'
collect2: error: ld returned 1 exit status
--- errorlevel 1
FAIL
.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C472803
581B43AEC547EAA8E7/ helloworld executable
dmd failed with exit code 1.
sorry for asking stupid questions but my background is more
PHP,Perl,Java...
any help would be appreciated. (context i am trying to make
debugging easier by giving the threads names)
Jan 09 2016
On Saturday, 9 January 2016 at 11:02:53 UTC, Keywan Ghadami wrote:
Hello, i am trying to the set the name of thread with:
import core.thread;
auto thisThread = Thread.getThis();
thisThread.name = "kiwi";
but GDB prints the name of the programm ("helloworld")
[Thread debugging using libthread_db enabled]
Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
Edit source/app.d to start your project.
^C
Program received signal SIGINT, Interrupt.
D main () at source/app.d:17
17 }
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fd0800 (LWP 3232) "helloworld" D main
() at source/app.d:17
Next thing i tried was calling pthread_setname_np (Linux) but
it seams that is not defined in phobos, so i tried to delcare
it by my self:
import core.sys.posix.pthread;
import std.string;
extern(C) int pthread_setname_np(pthread_t, const char*);
pthread_setname_np(pthread_self(),
toStringz("thread_name"));
but this gives me
helloworld ~master: building configuration "application"...
dmd -c
-of.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC54
EAA8E7/helloworld.o -debug -g -w -version=Have_helloworld -Isource/
source/app.d source/kiwi.d -vcolumns
Linking...
dmd
-of.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC
47EAA8E7/helloworld .dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC54
EAA8E7/helloworld.o -L--no-as-needed -g
.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C4728034581B43AEC547
AA8E7/helloworld.o: In function `_Dmain':
/home/keywan/hello_world/source/app.d:13: undefined reference
to `_D3app4mainFZ18pthread_setname_npUmxPaZi'
collect2: error: ld returned 1 exit status
--- errorlevel 1
FAIL
.dub/build/application-debug-linux.posix-x86_64-dmd_2069-AAC406C472803
581B43AEC547EAA8E7/ helloworld executable
dmd failed with exit code 1.
sorry for asking stupid questions but my background is more
PHP,Perl,Java...
any help would be appreciated. (context i am trying to make
debugging easier by giving the threads names)
I tried your code with a little addition as follows:
[code]
import core.sys.posix.pthread;
import std.string;
import std.stdio;
extern(C) int pthread_setname_np(pthread_t, const char*);
void main(){
pthread_setname_np(pthread_self(), toStringz("thread_name"));
readln();
}
[/code]
Compiled it with "dmd blah.d", and then run "./blah".
Because there is "readln" there, I opened another terminal and
used "ps H -o 'pid tid cmd comm'".
In the output:
PID TID CMD COMMAND
5089 5089 ./blah thread_name
So, it works.
Jan 09 2016
Keywan Ghadami <keywan.ghadami googlemail.com>
On Saturday, 9 January 2016 at 17:30:47 UTC, tcak wrote:
I tried your code with a little addition as follows:
[code]
import core.sys.posix.pthread;
import std.string;
import std.stdio;
extern(C) int pthread_setname_np(pthread_t, const char*);
void main(){
pthread_setname_np(pthread_self(),
toStringz("thread_name"));
readln();
}
[/code]
Compiled it with "dmd blah.d", and then run "./blah".
Because there is "readln" there, I opened another terminal and
used "ps H -o 'pid tid cmd comm'".
In the output:
PID TID CMD COMMAND
5089 5089 ./blah thread_name
So, it works.
tcak,
thank you very much, it works!
Maybe interesting for others: The reason for the error message i
had was, that i declared
extern(C) int pthread_setname_np(pthread_t, const char*);
within the main method.
Jan 09 2016