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Date: | Mon, 22 Jun 2015 15:25:41 +0200 |
From: | Corinna Vinschen <corinna-cygwin AT cygwin DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: Support for ITIMER_PROF? |
Message-ID: | <20150622132541.GA21402@calimero.vinschen.de> |
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--sdtB3X0nJg68CQEu Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Jun 22 08:05, Ken Brown wrote: > According to the Cygwin API documentation > (https://cygwin.com/cygwin-api/std-notes.html), "getitimer and setitimer > only support ITIMER_REAL for now." I'm wondering whether there's any cha= nce > that support for ITIMER_PROF might be added. I have no idea what the > obstacles are. >=20 > My reason for asking is that emacs has a CPU profiling function, which > doesn't work on Cygwin because it relies on ITIMER_PROF. (There's an > alternative implementation, but it requires timer_getoverrun, also not > available in Cygwin.) Both very tricky. Given the description of timer_getoverrun and how this stuff is implemented in Cygwin, you might get away with #ifdef __CYGWIN__ #define timer_getoverrun(x) 0 #endif indepedently of using SIGEV_SIGNAL or SIGEV_THREAD. Corinna --=20 Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat --sdtB3X0nJg68CQEu Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJViAzVAAoJEPU2Bp2uRE+gkFQP/Rou7B27ozEQu/I8Et1TxmB9 suPeSaKhCgdex87dcCeCMxT7Yt7CYM7wlxurgg4Y2g+FdgdYMZkHKeQ2bivTntGO 5GRmFTGANTs2ucLqgdGaYp86hn8p78WhAOz2wriG4fFtLo2XIcO95OqRA6ObtGwp 5aAcQlWYVR+kAkXsZZGt5unmm4+3JRVUmW6r8B1eylAqWGz0zrVahhjQu1I5wJC0 ujW3xF9BUiJg3qg9nYVphqZuBiP0+d3HUq1NvK9SG2Zi6O8vu+XwrD4Y7dnK7Y9m lCARlUqY9UF8lCThgK+DQ5pMOjP81v+Fo0jIjZ5MU3hEGBwLwIDYp/UOh5PW2UWD T72LkMziY/Eud/lCOHZ3Vf5fHS14FdNhKtCpORNdxDhNW8BLKE14lpY2owr17hOs F3GSmNpqvmxoaTi3sfHugMjKE1pbi0pg2lHgo40fGoehAK+AqcG5QZMErOHVEu87 Slu492YYgVxpBQ/z36rSQ/3KeQgWeKUkFfpnT65QW+toYlKd/dYB+NL0zkG1MPn2 zmsdFIoZd2jBD2/bEcf3QMJIrtiBYC8sdNfVgxHWDJFPOK/ePjyJ3K9gzMoSdxh0 lHEKuckUQBP5DmAcB8f5nXsBHcEuXn6eY/tKr2K8f5KwEQqq18evDq7aPZl70pAY qUj6CK1CerXuYOv5BUZO =zzT7 -----END PGP SIGNATURE----- --sdtB3X0nJg68CQEu--
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