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libuv: misc: add function to get CPU affinity mask size

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Implement it on Linux, FreeBSD, and Windows for now, and return
UV_ENOTSUP on other platforms.

Backported from upstream libuv PR 1527, scheduled for inclusion
in libuv 2.0.
This commit is contained in:
Brad King
2017-09-06 15:01:17 -04:00
parent 49e777aeb1
commit 43d6e5a71f
3 changed files with 17 additions and 0 deletions
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1
Utilities/cmlibuv/include/uv.h
View File

@@ -1094,6 +1094,7 @@ UV_EXTERN uv_pid_t uv_os_getppid(void);
UV_EXTERN int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count); UV_EXTERN int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count);
UV_EXTERN void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count); UV_EXTERN void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count);
UV_EXTERN int uv_cpumask_size(void);
UV_EXTERN int uv_interface_addresses(uv_interface_address_t** addresses, UV_EXTERN int uv_interface_addresses(uv_interface_address_t** addresses,
int* count); int* count);

12
Utilities/cmlibuv/src/unix/core.c
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@@ -40,6 +40,7 @@
#include <sys/uio.h> /* writev */ #include <sys/uio.h> /* writev */
#include <sys/resource.h> /* getrusage */ #include <sys/resource.h> /* getrusage */
#include <pwd.h> #include <pwd.h>
#include <sched.h>
#ifdef __sun #ifdef __sun
# include <netdb.h> /* MAXHOSTNAMELEN on Solaris */ # include <netdb.h> /* MAXHOSTNAMELEN on Solaris */
@@ -63,6 +64,8 @@
# include <sys/sysctl.h> # include <sys/sysctl.h>
# include <sys/filio.h> # include <sys/filio.h>
# include <sys/wait.h> # include <sys/wait.h>
# include <sys/param.h>
# include <sys/cpuset.h>
# define UV__O_CLOEXEC O_CLOEXEC # define UV__O_CLOEXEC O_CLOEXEC
# if defined(__FreeBSD__) && __FreeBSD__ >= 10 # if defined(__FreeBSD__) && __FreeBSD__ >= 10
# define uv__accept4 accept4 # define uv__accept4 accept4
@@ -1340,6 +1343,15 @@ int uv_os_gethostname(char* buffer, size_t* size) {
} }
int uv_cpumask_size(void) {
#if defined(__linux__) || defined(__FreeBSD__)
return CPU_SETSIZE;
#else
return UV_ENOTSUP;
#endif
}
uv_os_fd_t uv_get_osfhandle(int fd) { uv_os_fd_t uv_get_osfhandle(int fd) {
return fd; return fd;
} }

4
Utilities/cmlibuv/src/win/core.c
View File

@@ -603,3 +603,7 @@ int uv__socket_sockopt(uv_handle_t* handle, int optname, int* value) {
return 0; return 0;
} }
int uv_cpumask_size(void) {
return (int)(sizeof(DWORD_PTR) * 8);
}