diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/igt_aux.h | 1 | ||||
| -rw-r--r-- | lib/intel_os.c | 34 |
2 files changed, 35 insertions, 0 deletions
diff --git a/lib/igt_aux.h b/lib/igt_aux.h index 25a479f2..948101d2 100644 --- a/lib/igt_aux.h +++ b/lib/igt_aux.h @@ -61,6 +61,7 @@ void igt_wait_for_keypress(void); /* These are separate to allow easier testing when porting, see the comment at * the bottom of intel_os.c. */ +uint64_t intel_get_avail_ram_mb(void); uint64_t intel_get_total_ram_mb(void); uint64_t intel_get_total_swap_mb(void); diff --git a/lib/intel_os.c b/lib/intel_os.c index fb9f19cb..6f0621c7 100644 --- a/lib/intel_os.c +++ b/lib/intel_os.c @@ -86,6 +86,40 @@ intel_get_total_ram_mb(void) } /** + * intel_get_avail_ram_mb: + * + * Returns: + * The amount of unused system RAM available in MB. + */ +uint64_t +intel_get_avail_ram_mb(void) +{ + uint64_t retval; + +#ifdef HAVE_STRUCT_SYSINFO_TOTALRAM /* Linux */ + struct sysinfo sysinf; + int ret; + + ret = sysinfo(&sysinf); + assert(ret == 0); + + retval = sysinf.freeram; + retval *= sysinf.mem_unit; +#elif defined(_SC_PAGESIZE) && defined(_SC_PHYS_PAGES) /* Solaris */ + long pagesize, npages; + + pagesize = sysconf(_SC_PAGESIZE); + npages = sysconf(_SC_AVPHYS_PAGES); + + retval = (uint64_t) pagesize * npages; +#else +#error "Unknown how to get available RAM for this OS" +#endif + + return retval / (1024*1024); +} + +/** * intel_get_total_swap_mb: * * Returns: |