1 files changed, 71 insertions, 0 deletions
diff --git a/src/proc.c b/src/proc.c
new file mode 100644
index 0000000..2d74a1f
--- /dev/null
+++ b/src/proc.c
@@ -0,0 +1,71 @@
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <stdio.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#include <tlhelp32.h>
+#endif
+
+#include "proc.h"
+
+pid_t getPid(const char* process_name)
+{
+#if defined(__linux__) || defined(__FreeBSD__)
+
+#ifdef __FreeBSD__
+    // on FreeBSD /proc is not mounted by default
+    if (!isDir("/proc"))
+        return -1;
+#endif
+
+    pid_t pid;
+    char buf[PATH_MAX];
+    struct dirent* ent;
+    DIR* proc = opendir("/proc");
+    FILE* stat;
+
+    if (proc)
+    {
+        while ((ent = readdir(proc)) != NULL)
+        {
+            long lpid = atol(ent->d_name);
+            if (!lpid) continue;
+
+            snprintf(buf, sizeof(buf), "/proc/%ld/stat", lpid);
+            stat = fopen(buf, "r");
+
+            if (stat && (fscanf(stat, "%i (%[^)])", &pid, buf)) == 2)
+            {                
+                if (!strcmp(buf, process_name))
+                {
+                    fclose(stat);
+                    closedir(proc);
+                    return pid;
+                }
+                fclose(stat);
+            }
+        }
+
+        closedir(proc);
+    }
+
+#elif _WIN32
+    HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+    PROCESSENTRY32 pe32 = {0};
+    pe32.dwSize = sizeof(PROCESSENTRY32); 
+    Process32First(hSnap,&pe32);
+
+    while(Process32Next(hSnap,&pe32))
+    {
+        if (!strcmp(pe32.szExeFile, process_name))
+            return (long)pe32.th32ProcessID;
+    }
+#else
+    #error No Implementation
+#endif
+    return -1;
+}