abstraction.h

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#pragma once
 
// ============================================================================
// Platform Detection
// ============================================================================
 
#ifdef _WIN32
// Suppress Microsoft deprecation warnings for POSIX functions
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#endif
#ifndef _CRT_NONSTDC_NO_WARNINGS
#define _CRT_NONSTDC_NO_WARNINGS
#endif
 
#define PLATFORM_WINDOWS 1
 
#define PLATFORM_POSIX 0
#else
#define PLATFORM_WINDOWS 0
#define PLATFORM_POSIX 1
#endif
 
// ============================================================================
// Compiler Attributes
// ============================================================================
 
#ifdef _WIN32
// MSVC doesn't support __attribute__((packed)) - use #pragma pack instead
 
#define PACKED_STRUCT_BEGIN __pragma(pack(push, 1))
 
#define PACKED_STRUCT_END __pragma(pack(pop))
 
#define PACKED_ATTR
 
#define ALIGNED_ATTR(x) __declspec(align(x))
#else
// GCC/Clang packed struct support
 
#define PACKED_STRUCT_BEGIN
#define PACKED_STRUCT_END
 
#define PACKED_ATTR __attribute__((packed))
 
#define ALIGNED_ATTR(x) __attribute__((aligned(x)))
#endif
 
// ============================================================================
// Standard Headers
// ============================================================================
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include <time.h>
 
// ============================================================================
// Platform Abstraction Modules
// ============================================================================
 
#include "../platform/thread.h"
#include "../platform/mutex.h"
#include "../platform/rwlock.h"
#include "../platform/cond.h"
// Windows socket shutdown constants - define before socket.h includes winsock2.h
#ifdef _WIN32
#ifndef SHUT_RDWR
#define SHUT_RD 0
#define SHUT_WR 1
#define SHUT_RDWR 2
#endif
#endif
 
#include "../platform/socket.h"
#include "../platform/terminal.h"
#include "../platform/system.h"
#include "../platform/string.h"
#include "../platform/memory.h"
#include "../platform/process.h"
#include "../platform/filesystem.h"
// NOTE: uthash/uthash.h is NOT included here to avoid circular dependencies.
// Files that need uthash should include it directly AFTER common.h.
#include "../platform/pipe.h"
#ifndef __cplusplus
#include "../debug/sync.h"
#endif
 
// ============================================================================
// Thread-Local Storage and Alignment Macros
// ============================================================================
 
#ifdef _WIN32
// Windows-specific thread-local storage and alignment
#ifdef _MSC_VER
#define THREAD_LOCAL __declspec(thread)
 
#define ALIGNED_32 __declspec(align(32))
 
#define ALIGNED_16 __declspec(align(16))
#else
// Clang on Windows
#define THREAD_LOCAL __thread
#define ALIGNED_32 __attribute__((aligned(32)))
#define ALIGNED_16 __attribute__((aligned(16)))
#endif
#else
// POSIX thread-local storage and alignment
#ifndef THREAD_LOCAL
#define THREAD_LOCAL __thread
#define ALIGNED_32 __attribute__((aligned(32)))
#define ALIGNED_16 __attribute__((aligned(16)))
#endif
#endif
 
// ============================================================================
// Platform-Specific Compatibility
// ============================================================================
 
#ifdef _WIN32
// Windows-specific compatibility
 
#ifndef PATH_MAX
#define PATH_MAX 260
#endif
 
// POSIX-style file permissions (not used on Windows, provided for compatibility)
#ifndef S_IRUSR
#define S_IRUSR 0400
#define S_IWUSR 0200
#define S_IXUSR 0100
#define S_IRGRP 0040
#define S_IWGRP 0020
#define S_IXGRP 0010
#define S_IROTH 0004
#define S_IWOTH 0002
#define S_IXOTH 0001
#endif
 
// Signal constants
#ifndef SIGPIPE
#define SIGPIPE 13
#endif
 
// Standard file descriptor constants
#ifndef STDIN_FILENO
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
#endif
 
// Windows socket types
typedef unsigned long nfds_t;
 
// Windows socket control codes
#ifndef SIO_KEEPALIVE_VALS
#define SIO_KEEPALIVE_VALS _WSAIOW(IOC_VENDOR, 4)
#endif
 
// Use platform-safe write wrapper
#ifndef write
#define write _write
#endif
 
// Windows headers for POSIX-like functions
#include <io.h>
#include <fcntl.h>
#include <process.h>
 
// POSIX function aliases for Windows
#define close _close
#define lseek _lseek
#define read _read
#define unlink _unlink
 
// Additional POSIX function aliases for Windows
#define isatty _isatty
#define getpid _getpid
 
void *aligned_alloc(size_t alignment, size_t size);
 
int clock_gettime(int clk_id, struct timespec *tp);
 
struct tm *gmtime_r(const time_t *timep, struct tm *result);
 
typedef unsigned int useconds_t;
 
// Missing POSIX file flags for Windows
#ifndef O_CLOEXEC
#define O_CLOEXEC 0
#endif
 
// Missing POSIX time functions and constants for Windows
#include <time.h>
#ifndef CLOCK_REALTIME
#define CLOCK_REALTIME 0
#ifndef CLOCK_MONOTONIC
#define CLOCK_MONOTONIC 1
#endif
#endif
 
#else
// POSIX-specific includes
#include <unistd.h>
#include <limits.h>
#endif
 
// ============================================================================
// Cross-Platform Sleep Functions
// ============================================================================
 
void platform_sleep_us(unsigned int usec);
 
void platform_sleep_ns(uint64_t ns);
 
// ============================================================================
// Utility Macros
// ============================================================================
 
#ifndef UNUSED
#define UNUSED(x) ((void)(x))
#endif
 
#ifdef _WIN32
#define PLATFORM_BINARY_NAME "ascii-chat.exe"
#else
#define PLATFORM_BINARY_NAME "ascii-chat"
#endif
 
#ifdef _WIN32
#define PLATFORM_SHELL_NULL_REDIRECT "2>nul"
#else
#define PLATFORM_SHELL_NULL_REDIRECT "2>/dev/null"
#endif
 
// ============================================================================
// Backtrace Symbol Resolution
// ============================================================================
 
// ============================================================================
// Restore Default Packing for Application Code
// ============================================================================
// NOTE: windows_compat.h now handles pack(pop) automatically