initial upload

src/os/core/linux/os_core_linux.h

@@ -0,0 +1,88 @@
+// Copyright (c) 2024 Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef LINUX_H
+#define LINUX_H
+
+////////////////////////////////
+//~ NOTE(allen): Get all these linux includes
+
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <linux/limits.h>
+#include <time.h>
+#include <dirent.h>
+#include <pthread.h>
+#include <sys/syscall.h>
+#include <signal.h>
+#include <errno.h>
+#include <dlfcn.h>
+#include <sys/sysinfo.h>
+
+////////////////////////////////
+//~ NOTE(allen): File Iterator
+
+struct LNX_FileIter{
+  int fd;
+  DIR *dir;
+};
+StaticAssert(sizeof(Member(OS_FileIter, memory)) >= sizeof(LNX_FileIter), file_iter_memory_size);
+
+////////////////////////////////
+//~ NOTE(allen): Threading Entities
+
+enum LNX_EntityKind{
+  LNX_EntityKind_Null,
+  LNX_EntityKind_Thread,
+  LNX_EntityKind_Mutex,
+  LNX_EntityKind_ConditionVariable,
+};
+
+struct LNX_Entity{
+  LNX_Entity *next;
+  LNX_EntityKind kind;
+  volatile U32 reference_mask;
+  union{
+    struct{
+      OS_ThreadFunctionType *func;
+      void *ptr;
+      pthread_t handle;
+    } thread;
+    pthread_mutex_t mutex;
+    pthread_cond_t cond;
+  };
+};
+
+////////////////////////////////
+//~ NOTE(allen): Safe Call Chain
+
+struct LNX_SafeCallChain{
+  LNX_SafeCallChain *next;
+  OS_ThreadFunctionType *fail_handler;
+  void *ptr;
+};
+
+////////////////////////////////
+//~ NOTE(allen): Helpers
+
+internal B32 lnx_write_list_to_file_descriptor(int fd, String8List list);
+
+internal void lnx_date_time_from_tm(DateTime *out, struct tm *in, U32 msec);
+internal void lnx_tm_from_date_time(struct tm *out, DateTime *in);
+internal void lnx_dense_time_from_timespec(DenseTime *out, struct timespec *in);
+internal void lnx_file_properties_from_stat(FileProperties *out, struct stat *in);
+
+internal String8 lnx_string_from_signal(int signum);
+internal String8 lnx_string_from_errno(int error_number);
+
+internal LNX_Entity* lnx_alloc_entity(LNX_EntityKind kind);
+internal void lnx_free_entity(LNX_Entity *entity);
+internal void* lnx_thread_base(void *ptr);
+
+internal void lnx_safe_call_sig_handler(int);
+
+#endif //LINUX_H