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path: root/lib/mlibc/options/linux/generic/cpuset.cpp
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Diffstat (limited to 'lib/mlibc/options/linux/generic/cpuset.cpp')
-rw-r--r--lib/mlibc/options/linux/generic/cpuset.cpp71
1 files changed, 0 insertions, 71 deletions
diff --git a/lib/mlibc/options/linux/generic/cpuset.cpp b/lib/mlibc/options/linux/generic/cpuset.cpp
deleted file mode 100644
index d0292b7..0000000
--- a/lib/mlibc/options/linux/generic/cpuset.cpp
+++ /dev/null
@@ -1,71 +0,0 @@
-#include <limits.h>
-#include <sched.h>
-#include <stdlib.h>
-#include <string.h>
-
-cpu_set_t *__mlibc_cpu_alloc(int num_cpus) {
- return reinterpret_cast<cpu_set_t *>(calloc(1, CPU_ALLOC_SIZE(num_cpus)));
-}
-
-#define CPU_MASK_BITS (CHAR_BIT * sizeof(__cpu_mask))
-
-size_t __mlibc_cpu_alloc_size(int num_cpus) {
- /* calculate the (unaligned) remainder that doesn't neatly fit in one __cpu_mask; 0 or 1 */
- size_t remainder = ((num_cpus % CPU_MASK_BITS) + CPU_MASK_BITS - 1) / CPU_MASK_BITS;
- return sizeof(__cpu_mask) * (num_cpus / CPU_MASK_BITS + remainder);
-}
-
-void __mlibc_cpu_zero(const size_t setsize, cpu_set_t *set) {
- memset(set, 0, CPU_ALLOC_SIZE(setsize));
-}
-
-void __mlibc_cpu_set(const int cpu, const size_t setsize, cpu_set_t *set) {
- if(cpu >= static_cast<int>(setsize * CHAR_BIT)) {
- return;
- }
-
- unsigned char *ptr = reinterpret_cast<unsigned char *>(set);
- size_t off = cpu / CHAR_BIT;
- size_t mask = 1 << (cpu % CHAR_BIT);
-
- ptr[off] |= mask;
-}
-
-void __mlibc_cpu_clear(const int cpu, const size_t setsize, cpu_set_t *set) {
- if(cpu >= static_cast<int>(setsize * CHAR_BIT)) {
- return;
- }
-
- unsigned char *ptr = reinterpret_cast<unsigned char *>(set);
- size_t off = cpu / CHAR_BIT;
- size_t mask = 1 << (cpu % CHAR_BIT);
-
- ptr[off] &= ~mask;
-}
-
-
-int __mlibc_cpu_isset(const int cpu, const size_t setsize, const cpu_set_t *set) {
- if(cpu >= static_cast<int>(setsize * CHAR_BIT)) {
- return false;
- }
-
- const unsigned char *ptr = reinterpret_cast<const unsigned char *>(set);
- size_t off = cpu / CHAR_BIT;
- size_t mask = 1 << (cpu % CHAR_BIT);
-
- return (ptr[off] & mask);
-}
-
-int __mlibc_cpu_count(const size_t setsize, const cpu_set_t *set) {
- size_t count = 0;
- const unsigned char *ptr = reinterpret_cast<const unsigned char *>(set);
-
- for(size_t i = 0; i < setsize; i++) {
- for(size_t bit = 0; bit < CHAR_BIT; bit++) {
- if((1 << bit) & ptr[i])
- count++;
- }
- }
-
- return count;
-}