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os_unix: use libuv total memory function

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This commit is contained in:
Rich Wareham
2014-02-24 20:14:16 +00:00
committed by Thiago de Arruda
parent 68d8ab54a1
commit 65e7610655
2 changed files with 3 additions and 98 deletions
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90
src/os_unix.c
View File

@@ -333,100 +333,16 @@ int mch_char_avail() {
return WaitForChar(0L); return WaitForChar(0L);
} }
#if defined(HAVE_TOTAL_MEM) || defined(PROTO)
# ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
# endif
# if defined(HAVE_SYS_SYSCTL_H) && defined(HAVE_SYSCTL)
# include <sys/sysctl.h>
# endif
# if defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)
# include <sys/sysinfo.h>
# endif
/* /*
* Return total amount of memory available in Kbyte. * Return total amount of memory available in Kbyte.
* Doesn't change when memory has been allocated. * Doesn't change when memory has been allocated.
*/ */
long_u mch_total_mem(int special) long_u mch_total_mem(int special)
{ {
long_u mem = 0; /* We need to return memory in *Kbytes* but uv_get_total_memory() returns the
long_u shiftright = 10; /* how much to shift "mem" right for Kbyte */ * number of bytes of total memory. */
return uv_get_total_memory() >> 10;
# ifdef HAVE_SYSCTL
int mib[2], physmem;
size_t len;
/* BSD way of getting the amount of RAM available. */
mib[0] = CTL_HW;
mib[1] = HW_USERMEM;
len = sizeof(physmem);
if (sysctl(mib, 2, &physmem, &len, NULL, 0) == 0)
mem = (long_u)physmem;
# endif
# if defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)
if (mem == 0) {
struct sysinfo sinfo;
/* Linux way of getting amount of RAM available */
if (sysinfo(&sinfo) == 0) {
# ifdef HAVE_SYSINFO_MEM_UNIT
/* avoid overflow as much as possible */
while (shiftright > 0 && (sinfo.mem_unit & 1) == 0) {
sinfo.mem_unit = sinfo.mem_unit >> 1;
--shiftright;
}
mem = sinfo.totalram * sinfo.mem_unit;
# else
mem = sinfo.totalram;
# endif
}
}
# endif
# ifdef HAVE_SYSCONF
if (mem == 0) {
long pagesize, pagecount;
/* Solaris way of getting amount of RAM available */
pagesize = sysconf(_SC_PAGESIZE);
pagecount = sysconf(_SC_PHYS_PAGES);
if (pagesize > 0 && pagecount > 0) {
/* avoid overflow as much as possible */
while (shiftright > 0 && (pagesize & 1) == 0) {
pagesize = (long_u)pagesize >> 1;
--shiftright;
}
mem = (long_u)pagesize * pagecount;
}
}
# endif
/* Return the minimum of the physical memory and the user limit, because
* using more than the user limit may cause Vim to be terminated. */
# if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT)
{
struct rlimit rlp;
if (getrlimit(RLIMIT_DATA, &rlp) == 0
&& rlp.rlim_cur < ((rlim_t)1 << (sizeof(long_u) * 8 - 1))
# ifdef RLIM_INFINITY
&& rlp.rlim_cur != RLIM_INFINITY
# endif
&& ((long_u)rlp.rlim_cur >> 10) < (mem >> shiftright)
) {
mem = (long_u)rlp.rlim_cur;
shiftright = 10;
}
}
# endif
if (mem > 0)
return mem >> shiftright;
return (long_u)0x1fffff;
} }
#endif
void mch_delay(long msec, int ignoreinput) void mch_delay(long msec, int ignoreinput)
{ {

11
src/os_unix.h
View File

@@ -149,17 +149,6 @@
# undef __ARGS # undef __ARGS
#endif #endif
#if (defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT)) \
|| (defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)) \
|| defined(HAVE_SYSCTL) || defined(HAVE_SYSCONF)
# define HAVE_TOTAL_MEM
#endif
/* /*
* Unix system-dependent file names * Unix system-dependent file names
*/ */