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libc.obj : added a very simple example of working with futexes

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git-svn-id: svn://kolibrios.org@9867 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
turbocat 2022-08-02 05:39:06 +00:00
parent 92e48c928c
commit a7f779193d
3 changed files with 62 additions and 2 deletions
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6
programs/develop/ktcc/trunk/libc.obj/samples/Makefile
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@ -5,7 +5,8 @@ KPACK = kpack
CFLAGS = -I../include -B../../bin -I../../../../../../contrib/sdk/sources/SDL-1.2.2_newlib/include CFLAGS = -I../include -B../../bin -I../../../../../../contrib/sdk/sources/SDL-1.2.2_newlib/include
LIBS = -lbox_lib -lshell -lSDL -lsound -lnetwork -lrasterworks -limg -ldialog -lmsgbox LIBS = -lbox_lib -lshell -lSDL -lsound -lnetwork -lrasterworks -limg -ldialog -lmsgbox
BIN = stdio_test.kex \ BIN = \
stdio_test.kex \
basic_gui.kex \ basic_gui.kex \
http_tcp_demo.kex \ http_tcp_demo.kex \
math_test.kex \ math_test.kex \
@ -25,7 +26,8 @@ BIN = stdio_test.kex \
shell_test.kex \ shell_test.kex \
libc_test.kex \ libc_test.kex \
pipe.kex \ pipe.kex \
defgen.kex defgen.kex \
futex.kex
all: $(BIN) all: $(BIN)

1
programs/develop/ktcc/trunk/libc.obj/samples/build_all.sh
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@ -22,5 +22,6 @@ cp clayer/logo.png /tmp0/1/tcc_samples/logo.png
../tcc libc_test.c -o /tmp0/1/tcc_samples/libc_test ../tcc libc_test.c -o /tmp0/1/tcc_samples/libc_test
../tcc defgen.c -o /tmp0/1/tcc_samples/defgen ../tcc defgen.c -o /tmp0/1/tcc_samples/defgen
../tcc pipe.c -o /tmp0/1/tcc_samples/pipe ../tcc pipe.c -o /tmp0/1/tcc_samples/pipe
../tcc futex.c -o /tmp0/1/tcc_samples/futex
"/sys/File managers/Eolite" /tmp0/1/tcc_samples "/sys/File managers/Eolite" /tmp0/1/tcc_samples
exit exit

57
programs/develop/ktcc/trunk/libc.obj/samples/futex.c Normal file
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@ -0,0 +1,57 @@
#include <sys/ksys.h>
/* Very simple example of working with futexes in Kolibri OS.
* Author turbocat (Maxim Logaev).
* Thanks to Vitaly Krylov for help.
*
* The result of the program execution can be seen in the debug board.
*/
#define TH_STACK_SIZE 1024
#define TH_LOCK 1
#define TH_UNLOCK 0
uint8_t th_stack[TH_STACK_SIZE];
int glob_var = 0;
int th_lock = TH_UNLOCK;
uint32_t futex = 0;
void th_main(void)
{
_ksys_debug_puts("Child thread start\n");
_ksys_futex_wait(futex, TH_LOCK, 0);
glob_var = 99;
_ksys_debug_puts("Child thread end\n");
_ksys_exit();
}
int main(void)
{
_ksys_debug_puts("Parrent thread start");
futex = _ksys_futex_create(&th_lock);
th_lock = TH_LOCK;
if (_ksys_create_thread(th_main, th_stack) == -1) {
_ksys_debug_puts("Unable to create a new thread!\n");
return 1;
}
glob_var = 88;
_ksys_thread_yield();
_ksys_delay(100);
if (glob_var == 88) {
_ksys_debug_puts("Futex test OK :)\n");
} else {
_ksys_debug_puts("Futex test FAIL :(\n");
}
th_lock = TH_UNLOCK;
_ksys_futex_wake(futex, 1);
_ksys_futex_destroy(futex);
_ksys_debug_puts("Parrent thread end");
return 0;
}