Linux Manuals session 3

iv_timer_register, iv_timer_unregister, iv_timer_registered – deal with ivykis timers Synopsis#include <iv.h> struct iv_timer { struct timespec expires; void *cookie; void (*handler)(void *); };void IV_TIMER_INIT(struct iv_timer *timer); void iv_timer_register(struct iv_timer *timer); void iv_timer_unregister(struct iv_timer *timer); int iv_timer_registered(struct iv_timer *timer); DescriptionThe functions iv_timer_register and iv_timer_unregister register, respectively unregister, a timer with the current thread’s ivykis event loop. iv_timer_registered…

iv_timer_register, iv_timer_unregister, iv_timer_registered – deal with ivykis timers Synopsis#include <iv.h> struct iv_timer { struct timespec expires; void *cookie; void (*handler)(void *); };void IV_TIMER_INIT(struct iv_timer *timer); void iv_timer_register(struct iv_timer *timer); void iv_timer_unregister(struct iv_timer *timer); int iv_timer_registered(struct iv_timer *timer); DescriptionThe functions iv_timer_register and iv_timer_unregister register, respectively unregister, a timer with the current thread’s ivykis event loop. iv_timer_registered…

iv_timer_register, iv_timer_unregister, iv_timer_registered – deal with ivykis timers Synopsis#include <iv.h> struct iv_timer { struct timespec expires; void *cookie; void (*handler)(void *); };void IV_TIMER_INIT(struct iv_timer *timer); void iv_timer_register(struct iv_timer *timer); void iv_timer_unregister(struct iv_timer *timer); int iv_timer_registered(struct iv_timer *timer); DescriptionThe functions iv_timer_register and iv_timer_unregister register, respectively unregister, a timer with the current thread’s ivykis event loop. iv_timer_registered…

iv_now, iv_validate_now, iv_invalidate_now – ivykis time handling Synopsis#include <iv.h> extern struct timespec iv_now; void iv_validate_now(void); void iv_invalidate_now(void); Descriptioniv_now is a global variable that reflects the current time-of-day. Applications written to the ivykis API generally require to know the current time-of-day in many places, and therefore effort is done to cache this quantity. The contents of…

iv_thread_create, iv_thread_set_debug_state – ivykis thread convenience functions Synopsis#include <iv_thread.h> int iv_thread_create(char *name, void (*start_routine)(void *), void *arg); void iv_thread_set_debug_state(int state); Descriptioniv_thread_create is a wrapper around pthread_create(3) which will maintain an ivykis main loop reference in the calling thread (which must be an ivykis(3) thread, i.e. have had iv_init(3) called in it) for as long as…

iv_thread_create, iv_thread_set_debug_state – ivykis thread convenience functions Synopsis#include <iv_thread.h> int iv_thread_create(char *name, void (*start_routine)(void *), void *arg); void iv_thread_set_debug_state(int state); Descriptioniv_thread_create is a wrapper around pthread_create(3) which will maintain an ivykis main loop reference in the calling thread (which must be an ivykis(3) thread, i.e. have had iv_init(3) called in it) for as long as…

iv_thread_create, iv_thread_set_debug_state – ivykis thread convenience functions Synopsis#include <iv_thread.h> int iv_thread_create(char *name, void (*start_routine)(void *), void *arg); void iv_thread_set_debug_state(int state); Descriptioniv_thread_create is a wrapper around pthread_create(3) which will maintain an ivykis main loop reference in the calling thread (which must be an ivykis(3) thread, i.e. have had iv_init(3) called in it) for as long as…

iv_task_register, iv_task_unregister, iv_task_registered – deal with ivykis tasks Synopsis#include <iv.h> struct iv_task { void *cookie; void (*handler)(void *); };void IV_TASK_INIT(struct iv_task *task); void iv_task_register(struct iv_task *task); void iv_task_unregister(struct iv_task *task); int iv_task_registered(struct iv_task *task); DescriptionThe functions iv_task_register and iv_task_unregister register, respectively unregister, a task with the current thread’s ivykis event loop. iv_task_registered on a task…

iv_task_register, iv_task_unregister, iv_task_registered – deal with ivykis tasks Synopsis#include <iv.h> struct iv_task { void *cookie; void (*handler)(void *); };void IV_TASK_INIT(struct iv_task *task); void iv_task_register(struct iv_task *task); void iv_task_unregister(struct iv_task *task); int iv_task_registered(struct iv_task *task); DescriptionThe functions iv_task_register and iv_task_unregister register, respectively unregister, a task with the current thread’s ivykis event loop. iv_task_registered on a task…

iv_task_register, iv_task_unregister, iv_task_registered – deal with ivykis tasks Synopsis#include <iv.h> struct iv_task { void *cookie; void (*handler)(void *); };void IV_TASK_INIT(struct iv_task *task); void iv_task_register(struct iv_task *task); void iv_task_unregister(struct iv_task *task); int iv_task_registered(struct iv_task *task); DescriptionThe functions iv_task_register and iv_task_unregister register, respectively unregister, a task with the current thread’s ivykis event loop. iv_task_registered on a task…

iv_task_register, iv_task_unregister, iv_task_registered – deal with ivykis tasks Synopsis#include <iv.h> struct iv_task { void *cookie; void (*handler)(void *); };void IV_TASK_INIT(struct iv_task *task); void iv_task_register(struct iv_task *task); void iv_task_unregister(struct iv_task *task); int iv_task_registered(struct iv_task *task); DescriptionThe functions iv_task_register and iv_task_unregister register, respectively unregister, a task with the current thread’s ivykis event loop. iv_task_registered on a task…

IV_SIGNAL_INIT, iv_signal_register, iv_signal_unregister – ivykis signal handling Synopsis#include <iv_signal.h> struct iv_signal { int signum; unsigned int flags; void *cookie; void (*handler)(void *); };void IV_SIGNAL_INIT(struct iv_signal *this); int iv_signal_register(struct iv_signal *this); void iv_signal_unregister(struct iv_signal *this); Descriptioniv_signal provides a way for ivykis(3) applications to handle POSIX signals, by integrating them with the ivykis event loop. An ivykis…

IV_SIGNAL_INIT, iv_signal_register, iv_signal_unregister – ivykis signal handling Synopsis#include <iv_signal.h> struct iv_signal { int signum; unsigned int flags; void *cookie; void (*handler)(void *); };void IV_SIGNAL_INIT(struct iv_signal *this); int iv_signal_register(struct iv_signal *this); void iv_signal_unregister(struct iv_signal *this); Descriptioniv_signal provides a way for ivykis(3) applications to handle POSIX signals, by integrating them with the ivykis event loop. An ivykis…

IV_SIGNAL_INIT, iv_signal_register, iv_signal_unregister – ivykis signal handling Synopsis#include <iv_signal.h> struct iv_signal { int signum; unsigned int flags; void *cookie; void (*handler)(void *); };void IV_SIGNAL_INIT(struct iv_signal *this); int iv_signal_register(struct iv_signal *this); void iv_signal_unregister(struct iv_signal *this); Descriptioniv_signal provides a way for ivykis(3) applications to handle POSIX signals, by integrating them with the ivykis event loop. An ivykis…

iv_fatal, iv_set_fatal_msg_handler – ivykis fatal error condition handling Synopsis#include <iv.h> void iv_fatal(const char *fmt, …); void iv_set_fatal_msg_handler(void (*handler)(const char *msg)); Descriptioniv_fatal aborts the running program, after possibly emitting an error message. The fmt parameter is a printf(3)-style format string, the message to be logged. If no handler is set (the default), the formatted message will…

iv_quit – signal ivykis to exit the main loop Synopsis#include <iv.h> void iv_quit(void); Descriptioniv_quit signals ivykis to exit the current thread’s main loop. If called from any callback function, iv_quit will cause the iv_main(3) function called from the current thread to return. It is not meant to be used casually. See Alsoivykis(3), iv_examples(3)

IV_POPEN_REQUEST_INIT, iv_popen_request_submit, iv_popen_request_close – popen(3) for ivykis applications Synopsis#include <iv_popen.h> struct iv_popen_request { char *file; char **argv; char *type; };void IV_POPEN_REQUEST_INIT(struct iv_popen_request *this); int iv_popen_request_submit(struct iv_popen_request *this); void iv_popen_request_close(struct iv_popen_request *this); Descriptioniv_popen provides ivykis(3) applications with an asynchronous version of popen(3) that is integrated with the ivykis event loop. After initialising a struct iv_popen_request object…

IV_POPEN_REQUEST_INIT, iv_popen_request_submit, iv_popen_request_close – popen(3) for ivykis applications Synopsis#include <iv_popen.h> struct iv_popen_request { char *file; char **argv; char *type; };void IV_POPEN_REQUEST_INIT(struct iv_popen_request *this); int iv_popen_request_submit(struct iv_popen_request *this); void iv_popen_request_close(struct iv_popen_request *this); Descriptioniv_popen provides ivykis(3) applications with an asynchronous version of popen(3) that is integrated with the ivykis event loop. After initialising a struct iv_popen_request object…

IV_POPEN_REQUEST_INIT, iv_popen_request_submit, iv_popen_request_close – popen(3) for ivykis applications Synopsis#include <iv_popen.h> struct iv_popen_request { char *file; char **argv; char *type; };void IV_POPEN_REQUEST_INIT(struct iv_popen_request *this); int iv_popen_request_submit(struct iv_popen_request *this); void iv_popen_request_close(struct iv_popen_request *this); Descriptioniv_popen provides ivykis(3) applications with an asynchronous version of popen(3) that is integrated with the ivykis event loop. After initialising a struct iv_popen_request object…

iv_main – enter the ivykis main loop Synopsis#include <iv.h> void iv_main(void); Descriptioniv_main enters the current thread’s ivykis main loop. The ivykis main loop consists of checking the status of the registered file descriptors, timers and tasks, and either calling callback functions corresponding to active objects, or blocking until an event arrives. Each thread that wants…