7 commits

Author	SHA1	Message	Date
Justine Tunney	933411ba99	Improve synchronization ... - Fix bugs in kDos2Errno definition - malloc() should now be thread safe - Fix bug in rollup.com header generator - Fix open(O_APPEND) on the New Technology - Fix select() on the New Technology and test it - Work towards refactoring i/o for thread safety - Socket reads and writes on NT now poll for signals - Work towards i/o completion ports on the New Technology - Make read() and write() intermittently check for signals - Blinkenlights keyboard i/o so much better on NT w/ poll() - You can now poll() files and sockets at the same time on NT - Fix bug in appendr() that manifests with dlmalloc footers off	2022-04-15 15:31:55 -07:00
Justine Tunney	14e192e5ba	Introduce --strace flag for system call tracing ... This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support	2022-03-18 18:07:28 -07:00
Justine Tunney	4864565198	Make minor improvements	2021-05-15 21:53:26 -07:00
Justine Tunney	a37960a3af	Remove dollars from system call support symbols	2021-02-03 19:35:29 -08:00
Justine Tunney	37a4c70c36	Change license	2020-12-27 17:18:44 -08:00
Justine Tunney	3e4fd4b0ad	Add epoll and do more release readiness changes ... This change also pays off some of the remaining technical debt with stdio, file descriptors, and memory managemnt polyfills.	2020-11-28 12:01:51 -08:00
Justine Tunney	c91b3c5006	Initial import	2020-06-15 07:18:57 -07:00