8 commits

Author	SHA1	Message	Date
rtm	46bbd72f3e	no more recursive locks ... wakeup1() assumes you hold proc_table_lock sleep(chan, lock) provides atomic sleep-and-release to wait for condition ugly code in swtch/scheduler to implement new sleep fix lots of bugs in pipes, wait, and exit fix bugs if timer interrupt goes off in schedule() console locks per line, not per byte	2006-07-15 12:03:57 +00:00
rtm	b548df152b	pre-empt both user and kernel, in clock interrupt ... usertest.c tests pre-emption kill()	2006-07-11 17:39:45 +00:00
kaashoek	7837c71b32	disable all interrupts when acquiring lock ... user program that makes a blocking system call	2006-07-06 21:47:22 +00:00
rtm	8b4e2a08fe	swtch saves callee-saved registers ... swtch idles on per-CPU stack, not on calling process's stack fix pipe bugs usertest.c tests pipes, fork, exit, close	2006-07-01 21:26:01 +00:00
rtm	c41f1de5d4	file descriptors ... pipes	2006-06-27 14:35:53 +00:00
rtm	bf3903612d	system call arguments	2006-06-26 15:11:19 +00:00
rtm	be0a7eacda	sleep, wakeup, wait, exit	2006-06-15 19:58:01 +00:00
rtm	a4c03dea09	primitive fork and exit system calls	2006-06-15 16:02:20 +00:00