Platform: adds pid field and use it

src/common/impl/FFPlatform_unix.c

@@ -28,15 +28,15 @@ static void getExePath(FFPlatform* platform)
         if (exePathLen >= 0)
             exePath[exePathLen] = '\0';
     #elif defined(__APPLE__)
-        int exePathLen = proc_pidpath((int) getpid(), exePath, sizeof(exePath));
+        int exePathLen = proc_pidpath(platform->pid, exePath, sizeof(exePath));
     #elif defined(__FreeBSD__) || defined(__NetBSD__)
         size_t exePathLen = sizeof(exePath);
         if(sysctl(
             (int[]){CTL_KERN,
             #ifdef __FreeBSD__
-                KERN_PROC, KERN_PROC_PATHNAME, (int) getpid()
+                KERN_PROC, KERN_PROC_PATHNAME, platform->pid
             #else
-                KERN_PROC_ARGS, (int) getpid(), KERN_PROC_PATHNAME
+                KERN_PROC_ARGS, platform->pid, KERN_PROC_PATHNAME
             #endif
             }, 4,
             exePath, &exePathLen,
@@ -226,6 +226,7 @@ static void getSysinfo(FFPlatformSysinfo* info, const struct utsname* uts)
 
 void ffPlatformInitImpl(FFPlatform* platform)
 {
+    platform->pid = (uint32_t) getpid();
     platform->uid = getuid();
     struct passwd* pwd = getpwuid(platform->uid);
 

src/common/impl/FFPlatform_windows.c

@@ -307,6 +307,7 @@ static void getSystemArchitectureAndPageSize(FFPlatformSysinfo* info)
 
 void ffPlatformInitImpl(FFPlatform* platform)
 {
+    platform->pid = (uint32_t) GetCurrentProcessId();
     getExePath(platform);
     getHomeDir(platform);
     getCacheDir(platform);

src/common/impl/netif_apple.c

@@ -72,7 +72,7 @@ bool ffNetifGetDefaultRouteImplV4(FFNetifDefaultRouteResult* result)
         setsockopt(pfRoute, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout));
     }
 
-    int pid = getpid();
+    uint32_t pid = instance.state.platform.pid;
 
     struct {
         struct rt_msghdr hdr;
@@ -145,7 +145,7 @@ bool ffNetifGetDefaultRouteImplV6(FFNetifDefaultRouteResult* result)
         setsockopt(pfRoute, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout));
     }
 
-    int pid = getpid();
+    uint32_t pid = instance.state.platform.pid;
 
     struct {
         struct rt_msghdr hdr;

src/common/impl/netif_linux.c

@@ -19,7 +19,7 @@ bool ffNetifGetDefaultRouteImplV4(FFNetifDefaultRouteResult* result)
     }
     FF_DEBUG("Created netlink socket: fd=%d", sock_fd);
 
-    unsigned pid = (unsigned) getpid();
+    uint32_t pid = instance.state.platform.pid;
     FF_DEBUG("Process PID: %u", pid);
 
     // Bind socket
@@ -235,7 +235,7 @@ bool ffNetifGetDefaultRouteImplV6(FFNetifDefaultRouteResult* result)
     }
     FF_DEBUG("Created netlink socket: fd=%d", sock_fd);
 
-    unsigned pid = (unsigned) getpid();
+    int pid = instance.state.platform.pid;
     FF_DEBUG("Process PID: %u", pid);
 
     // Bind socket

src/common/impl/processing_windows.c

@@ -53,7 +53,7 @@ const char* ffProcessSpawn(char* const argv[], bool useStdErr, FFProcessHandle*
 
     wchar_t pipeName[32];
     static unsigned pidCounter = 0;
-    swprintf(pipeName, ARRAY_SIZE(pipeName), L"\\\\.\\pipe\\FASTFETCH-%u-%u", GetCurrentProcessId(), ++pidCounter);
+    swprintf(pipeName, ARRAY_SIZE(pipeName), L"\\\\.\\pipe\\FASTFETCH-%u-%u", instance.state.platform.pid, ++pidCounter);
 
     FF_AUTO_CLOSE_FD HANDLE hChildPipeRead = CreateNamedPipeW(
         pipeName,