From ec4f39b2333db94096ec2d6b900eabaf4d1e3f1b Mon Sep 17 00:00:00 2001 From: Jeff King Date: Wed, 17 Aug 2022 02:06:58 -0400 Subject: git-compat-util: make MAX_IO_SIZE define globally available We define MAX_IO_SIZE within wrapper.c, but it's useful for any code that wants to do a raw write() for whatever reason (say, because they want different EAGAIN handling). Let's make it available everywhere. The alternative would be adding xwrite_foo() variants to give callers more options. But there's really no reason MAX_IO_SIZE needs to be abstracted away, so this give callers the most flexibility. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- wrapper.c | 22 ---------------------- 1 file changed, 22 deletions(-) (limited to 'wrapper.c') diff --git a/wrapper.c b/wrapper.c index 1c3c970080..f52f3e21cc 100644 --- a/wrapper.c +++ b/wrapper.c @@ -161,28 +161,6 @@ void xsetenv(const char *name, const char *value, int overwrite) die_errno(_("could not setenv '%s'"), name ? name : "(null)"); } -/* - * Limit size of IO chunks, because huge chunks only cause pain. OS X - * 64-bit is buggy, returning EINVAL if len >= INT_MAX; and even in - * the absence of bugs, large chunks can result in bad latencies when - * you decide to kill the process. - * - * We pick 8 MiB as our default, but if the platform defines SSIZE_MAX - * that is smaller than that, clip it to SSIZE_MAX, as a call to - * read(2) or write(2) larger than that is allowed to fail. As the last - * resort, we allow a port to pass via CFLAGS e.g. "-DMAX_IO_SIZE=value" - * to override this, if the definition of SSIZE_MAX given by the platform - * is broken. - */ -#ifndef MAX_IO_SIZE -# define MAX_IO_SIZE_DEFAULT (8*1024*1024) -# if defined(SSIZE_MAX) && (SSIZE_MAX < MAX_IO_SIZE_DEFAULT) -# define MAX_IO_SIZE SSIZE_MAX -# else -# define MAX_IO_SIZE MAX_IO_SIZE_DEFAULT -# endif -#endif - /** * xopen() is the same as open(), but it die()s if the open() fails. */ -- cgit v1.2.3