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      1 /* Copyright libuv project contributors. All rights reserved.
      2  *
      3  * Permission is hereby granted, free of charge, to any person obtaining a copy
      4  * of this software and associated documentation files (the "Software"), to
      5  * deal in the Software without restriction, including without limitation the
      6  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
      7  * sell copies of the Software, and to permit persons to whom the Software is
      8  * furnished to do so, subject to the following conditions:
      9  *
     10  * The above copyright notice and this permission notice shall be included in
     11  * all copies or substantial portions of the Software.
     12  *
     13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     18  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     19  * IN THE SOFTWARE.
     20  */
     21 
     22 
     23 #ifndef UV_OS390_SYSCALL_H_
     24 #define UV_OS390_SYSCALL_H_
     25 
     26 #include "uv.h"
     27 #include "internal.h"
     28 #include <dirent.h>
     29 #include <poll.h>
     30 #include <pthread.h>
     31 #include "zos-base.h"
     32 
     33 #define EPOLL_CTL_ADD             1
     34 #define EPOLL_CTL_DEL             2
     35 #define EPOLL_CTL_MOD             3
     36 #define MAX_EPOLL_INSTANCES       256
     37 #define MAX_ITEMS_PER_EPOLL       1024
     38 
     39 #define UV__O_CLOEXEC             0x80000
     40 
     41 struct epoll_event {
     42   int events;
     43   int fd;
     44   int is_msg;
     45 };
     46 
     47 typedef struct {
     48   QUEUE member;
     49   struct pollfd* items;
     50   unsigned long size;
     51   int msg_queue;
     52 } uv__os390_epoll;
     53 
     54 /* epoll api */
     55 uv__os390_epoll* epoll_create1(int flags);
     56 int epoll_ctl(uv__os390_epoll* ep, int op, int fd, struct epoll_event *event);
     57 int epoll_wait(uv__os390_epoll* ep, struct epoll_event *events, int maxevents, int timeout);
     58 int epoll_file_close(int fd);
     59 
     60 /* utility functions */
     61 int scandir(const char* maindir, struct dirent*** namelist,
     62             int (*filter)(const struct dirent *),
     63             int (*compar)(const struct dirent **,
     64             const struct dirent **));
     65 char *mkdtemp(char* path);
     66 ssize_t os390_readlink(const char* path, char* buf, size_t len);
     67 size_t strnlen(const char* str, size_t maxlen);
     68 int sem_init(UV_PLATFORM_SEM_T* semid, int pshared, unsigned int value);
     69 int sem_destroy(UV_PLATFORM_SEM_T* semid);
     70 int sem_post(UV_PLATFORM_SEM_T* semid);
     71 int sem_trywait(UV_PLATFORM_SEM_T* semid);
     72 int sem_wait(UV_PLATFORM_SEM_T* semid);
     73 void uv__os390_cleanup(void);
     74 
     75 #endif /* UV_OS390_SYSCALL_H_ */
     76