eliminate os_core, move into base; eliminate regs, move into arch abstraction layer, define x64 regs in x64 layer; move win32 backend for os core (now base) functionality to top-level win32 layer

src/base/base_processes.c

@@ -0,0 +1,115 @@
+// Copyright (c) Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+////////////////////////////////
+//~ rjf: Handle Type Functions
+
+internal Process
+process_zero(void)
+{
+  Process p = {0};
+  return p;
+}
+
+internal B32
+process_match(Process a, Process b)
+{
+  B32 result = MemoryMatchStruct(&a, &b);
+  return result;
+}
+
+internal void
+process_list_push(Arena *arena, ProcessList *list, Process p)
+{
+  ProcessNode *n = push_array(arena, ProcessNode, 1);
+  SLLQueuePush(list->first, list->last, n);
+  n->v = p;
+  list->count += 1;
+}
+
+////////////////////////////////
+//~ rjf: Process Launcher Helpers
+
+internal Process
+launch_cmd_line(String8 string)
+{
+  Temp scratch = scratch_begin(0, 0);
+  U8 split_chars[] = {' '};
+  String8List parts = str8_split(scratch.arena, string, split_chars, ArrayCount(split_chars), 0);
+  Process process = {0};
+  if(parts.node_count != 0)
+  {
+    // rjf: unpack exe part
+    String8 exe = parts.first->string;
+    String8 exe_folder = str8_chop_last_slash(exe);
+    if(exe_folder.size == 0)
+    {
+      exe_folder = get_current_path(scratch.arena);
+    }
+    
+    // rjf: find stdout delimiter
+    String8Node *stdout_delimiter_n = 0;
+    for(String8Node *n = parts.first; n != 0; n = n->next)
+    {
+      if(str8_match(n->string, str8_lit(">"), 0))
+      {
+        stdout_delimiter_n = n;
+        break;
+      }
+    }
+    
+    // rjf: read stdout path
+    String8 stdout_path = {0};
+    if(stdout_delimiter_n && stdout_delimiter_n->next)
+    {
+      stdout_path = stdout_delimiter_n->next->string;
+    }
+    
+    // rjf: open stdout handle
+    File stdout_handle = {0};
+    if(stdout_path.size != 0)
+    {
+      File file = file_open(AccessFlag_Write|AccessFlag_Read, stdout_path);
+      file_close(file);
+      stdout_handle = file_open(AccessFlag_Write|AccessFlag_Append|AccessFlag_ShareRead|AccessFlag_ShareWrite|AccessFlag_Inherited, stdout_path);
+    }
+    
+    // rjf: form command line
+    String8List cmdline = {0};
+    for(String8Node *n = parts.first; n != stdout_delimiter_n && n != 0; n = n->next)
+    {
+      str8_list_push(scratch.arena, &cmdline, n->string);
+    }
+    
+    // rjf: launch
+    ProcessLaunchParams params = {0};
+    params.cmd_line = cmdline;
+    params.path = exe_folder;
+    params.inherit_env = 1;
+    params.stdout_file = stdout_handle;
+    process = process_launch(&params);
+    
+    // rjf: close stdout handle
+    {
+      if(stdout_path.size != 0)
+      {
+        file_close(stdout_handle);
+      }
+    }
+  }
+  scratch_end(scratch);
+  return process;
+}
+
+internal Process
+launch_cmd_linef(char *fmt, ...)
+{
+  Temp scratch = scratch_begin(0, 0);
+  va_list args;
+  va_start(args, fmt);
+  String8 string = str8fv(scratch.arena, fmt, args);
+  Process result = launch_cmd_line(string);
+  va_end(args);
+  scratch_end(scratch);
+  return result;
+}