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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
commit2cb7e0aaedad73b076ea18c6900b0e86c5760d79 (patch)
treeda68ca54bb79f4080079bf0828acda937593a4e1 /src/shared/cpu-set-util.h
parentInitial commit. (diff)
downloadsystemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.tar.xz
systemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.zip
Adding upstream version 247.3.upstream/247.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/shared/cpu-set-util.h')
-rw-r--r--src/shared/cpu-set-util.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/shared/cpu-set-util.h b/src/shared/cpu-set-util.h
new file mode 100644
index 0000000..3c63a58
--- /dev/null
+++ b/src/shared/cpu-set-util.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <sched.h>
+
+#include "macro.h"
+#include "missing_syscall.h"
+
+/* This wraps the libc interface with a variable to keep the allocated size. */
+typedef struct CPUSet {
+ cpu_set_t *set;
+ size_t allocated; /* in bytes */
+} CPUSet;
+
+static inline void cpu_set_reset(CPUSet *a) {
+ assert((a->allocated > 0) == !!a->set);
+ if (a->set)
+ CPU_FREE(a->set);
+ *a = (CPUSet) {};
+}
+
+int cpu_set_add_all(CPUSet *a, const CPUSet *b);
+int cpu_set_add(CPUSet *a, unsigned cpu);
+
+char* cpu_set_to_string(const CPUSet *a);
+char *cpu_set_to_range_string(const CPUSet *a);
+int cpu_set_realloc(CPUSet *cpu_set, unsigned ncpus);
+
+int parse_cpu_set_full(
+ const char *rvalue,
+ CPUSet *cpu_set,
+ bool warn,
+ const char *unit,
+ const char *filename, unsigned line,
+ const char *lvalue);
+int parse_cpu_set_extend(
+ const char *rvalue,
+ CPUSet *old,
+ bool warn,
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *lvalue);
+
+static inline int parse_cpu_set(const char *rvalue, CPUSet *cpu_set){
+ return parse_cpu_set_full(rvalue, cpu_set, false, NULL, NULL, 0, NULL);
+}
+
+int cpu_set_to_dbus(const CPUSet *set, uint8_t **ret, size_t *allocated);
+int cpu_set_from_dbus(const uint8_t *bits, size_t size, CPUSet *set);
+
+int cpus_in_affinity_mask(void);