From 6e3bfbb2589adea4af09c6acac0db344cfe114b8 Mon Sep 17 00:00:00 2001 From: "Richard M. Stallman" Date: Sat, 29 Apr 1995 16:47:57 +0000 Subject: [PATCH] (Fcall_process): Extend BUFFER arg so it can specify a separate output file for stderr output. (Fcall_process_region): Doc fix. --- src/callproc.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/src/callproc.c b/src/callproc.c index b308644e7a..5b321f1821 100644 --- a/src/callproc.c +++ b/src/callproc.c @@ -200,7 +200,9 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") int fd[2]; int filefd; register int pid; - char buf[1024]; + char buf[16384]; + char *bufptr = buf; + int bufsize = 16384; int count = specpdl_ptr - specpdl; register unsigned char **new_argv = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); @@ -493,8 +495,9 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") { register int nread; int first = 1; + int total_read = 0; - while ((nread = read (fd[0], buf, sizeof buf)) != 0) + while ((nread = read (fd[0], bufptr, bufsize)) != 0) { if (nread < 0) { @@ -505,8 +508,19 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") #endif } immediate_quit = 0; + total_read += nread; + if (!NILP (buffer)) - insert (buf, nread); + insert (bufptr, nread); + + /* Make the buffer bigger as we continue to read more data, + but not past 64k. */ + if (bufsize < 64 * 1024 && total_read > 32 * bufsize) + { + bufsize *= 2; + bufptr = (char *) alloca (bufsize); + } + if (!NILP (display) && INTERACTIVE) { if (first) -- 2.20.1