posix: add package

2026-08-06 23:58:50 +00:00 · 2024-08-14 01:44:35 +02:00
parent ac68a9d52c
commit efe68c2e24
83 changed files with 12665 additions and 328 deletions
@@ -0,0 +1,105 @@
+package posix
+
+import "core:c"
+
+when ODIN_OS == .Darwin {
+	foreign import lib "system:System.framework"
+} else {
+	foreign import lib "system:c"
+}
+
+// sched.h - execution scheduling
+
+foreign lib {
+	/*
+	Returns the minimum for the given scheduling policy.
+
+	[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_get_priority_max.html ]]
+	*/
+	sched_get_priority_max :: proc(policy: Sched_Policy) -> c.int ---
+
+	/*
+	Returns the maximum for the given scheduling policy.
+
+	Returns: -1 (setting errno) on failure, the maximum on success
+
+	[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_get_priority_max.html ]]
+	*/
+	sched_get_priority_min :: proc(policy: Sched_Policy) -> c.int ---
+
+	/*
+	Forces the running thread to relinquish the processor until it again becomes the head of its thread list.
+	*/
+	sched_yield :: proc() -> result ---
+
+	/* NOTE: unimplemented on darwin (I think?).
+	/*
+	Get the scheduling params of a process, pid of 0 will return that of the current process.
+
+	[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_getparam.html ]]
+	*/
+	sched_getparam :: proc(pid: pid_t, param: ^sched_param) -> result ---
+	/*
+	Sets the scheduling parameters of the given process, pid of 0 will set that of the current process.
+
+	[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_setparam.html ]]
+	*/
+	sched_setparam :: proc(pid: pid_t, param: ^sched_param) -> result ---
+
+	/*
+	Returns the scheduling policy of a process, pid of 0 will return that of the current process.
+
+	[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_getscheduler.html ]]
+	*/
+	sched_getscheduler :: proc(pid: pid_t) -> Sched_Policy ---
+
+	/*
+	Sets the scheduling policy and parameters of the process, pid 0 will be the current process.
+
+	[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_setscheduler.html ]]
+	*/
+	sched_setscheduler :: proc(pid: pid_t, policy: Sched_Policy, param: ^sched_param) -> result ---
+
+	/*
+	Updates the timespec structure to contain the current execution time limit for the process.
+	pid of 0 will return that of the current process.
+
+	[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_rr_get_interval.html ]]
+	*/
+	sched_rr_get_interval :: proc(pid: pid_t, interval: ^timespec) -> result ---
+	*/
+}
+
+Sched_Policy :: enum c.int {
+	// Error condition of sched_getscheduler.
+	ERROR    = -1,
+	// First in-first out (FIFO) scheduling policy.
+	FIFO     = SCHED_FIFO,
+	// Round robin scheduling policy.
+	RR       = SCHED_RR,
+	// Another scheduling policy.
+	OTHER    = SCHED_OTHER,
+}
+
+when ODIN_OS == .Darwin {
+
+	SCHED_FIFO     :: 4
+	SCHED_RR       :: 2
+	// SCHED_SPORADIC :: 3 NOTE: not a thing on freebsd, netbsd and probably others, leaving it out
+	SCHED_OTHER    :: 1
+
+} else when ODIN_OS == .FreeBSD || ODIN_OS == .OpenBSD {
+
+	SCHED_FIFO     :: 1
+	SCHED_RR       :: 3
+	SCHED_OTHER    :: 2
+
+} else when ODIN_OS == .NetBSD {
+
+	SCHED_OTHER    :: 0
+	SCHED_FIFO     :: 1
+	SCHED_RR       :: 2
+
+} else {
+	#panic("posix is unimplemented for the current target")
+}