init

.devcontainer/devcontainer.json

@@ -0,0 +1,19 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/debian
+{
+	"name": "Debian",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/base:bullseye"
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.gitignore

@@ -0,0 +1 @@
+bin

Makefile

@@ -0,0 +1,17 @@
+exampleUnix: examples/unix/main.c examples/unix/lib.c src/dlopen.c
+	## BUILD UNIX EXAMPLES ##
+
+	mkdir -p bin
+
+	gcc examples/unix/main.c src/dlopen.c -o bin/exampleUnix -ldl
+	gcc examples/unix/lib.c -shared -o bin/exampleUnixLib.dll
+
+exampleWin: examples/win/main.c examples/win/lib.c src/dlopen.c
+	## BUILD WINDOWS EXAMPLES ##
+
+	mkdir -p bin
+
+	x86_64-w64-mingw32-gcc examples/win/main.c src/dlopen.c -o bin/exampleWin
+	x86_64-w64-mingw32-gcc examples/win/lib.c -shared -o bin/exampleWinLib.dll
+
+all: exampleUnix exampleWin

README.md

@@ -1 +0,0 @@
-

examples/unix/lib.c

@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+void test(){
+    printf("testing 123\n");
+}

examples/unix/main.c

@@ -0,0 +1,6 @@
+#include "../../src/dlopen.h"
+
+int main()
+{
+    struct hotwire_dll_t dll = hw_dlopen("./bin/exampleUnixLib.dll", RTLD_NOW);
+}

examples/win/lib.c

@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+void test(){
+    printf("testing 123(windows)\n");
+}

examples/win/main.c

@@ -0,0 +1,6 @@
+#include "../../src/dlopen.h"
+
+int main()
+{
+    struct hotwire_dll_t dll = hw_dlopen("./bin/exampleWinLib.dll", 0);
+}

src/dlopen.c

@@ -0,0 +1,32 @@
+#include "dlopen.h"
+#include <stdlib.h>
+
+struct hotwire_dll_t hw_dlopen(const char *file, int flags) {
+
+  struct hotwire_dll_t dll;
+
+// UNIX specific code(MacOS uses the same API as linux for dlopen)
+#if defined(__linux__) || defined(__APPLE__)
+  dll.dll_handle = dlopen(file, flags);
+
+  if (dll.dll_handle == NULL){
+    printf("could not load dll(UNIX api call returned error)\n");
+    printf("error message: %s\n", dlerror());
+
+    exit(-1);
+  }
+#endif
+
+// Windows specific code
+#if defined(_WIN32)
+  dll.dll_handle = LoadLibrary(file);
+
+  if (!dll.dll_handle){
+    printf("could not load dll(windows api call returned error)\n");
+    
+    exit(-1);
+  }
+#endif
+
+  return dll;
+}

src/dlopen.h

@@ -0,0 +1,37 @@
+#pragma once
+#include <stdio.h>
+
+#if defined(__APPLE__)
+#define HW_MODE 0
+#include <dlfcn.h>
+#endif
+
+#if defined(__linux__)
+#define HW_MODE 1
+#include <dlfcn.h>
+#endif
+
+#if defined(_WIN32)
+#define HW_MODE 2
+#include <windows.h>
+#endif
+
+
+struct hotwire_dll_t {
+    #if defined(__linux__) || defined(__APPLE__)
+    void* dll_handle;
+    #endif
+
+    #if defined(_WIN32)
+    HINSTANCE dll_handle;
+    #endif
+};
+
+// Function arguments are based off the dlopen() api on POSIX based operating systems
+// Loads dll from library
+struct hotwire_dll_t hw_dlopen(const char* file, int flags);
+
+// Loads symbol from DLL
+inline void* hw_dlsym(struct hotwire_dll_t dll, const char *__restrict symbol);
+
+inline int hw_dlclose(void* handle);