diff --git a/src/node.cc b/src/node.cc
index 48ca941f48..8f1589ee64 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -17,6 +17,8 @@
 #include <pwd.h> /* getpwnam() */
 #include <grp.h> /* getgrnam() */
 
+#include "platform.h"
+
 #include <node_buffer.h>
 #include <node_io_watcher.h>
 #include <node_net.h>
@@ -1232,218 +1234,20 @@ v8::Handle<v8::Value> Exit(const v8::Arguments& args) {
   return Undefined();
 }
 
-#ifdef __sun
-#define HAVE_GETMEM 1
-#include <unistd.h> /* getpagesize() */
-
-#if (!defined(_LP64)) && (_FILE_OFFSET_BITS - 0 == 64)
-#define PROCFS_FILE_OFFSET_BITS_HACK 1
-#undef _FILE_OFFSET_BITS
-#else
-#define PROCFS_FILE_OFFSET_BITS_HACK 0
-#endif
-
-#include <procfs.h>
-
-#if (PROCFS_FILE_OFFSET_BITS_HACK - 0 == 1)
-#define _FILE_OFFSET_BITS 64
-#endif
-
-int getmem(size_t *rss, size_t *vsize) {
-  pid_t pid = getpid();
-
-  size_t page_size = getpagesize();
-  char pidpath[1024];
-  sprintf(pidpath, "/proc/%d/psinfo", pid);
-
-  psinfo_t psinfo;
-  FILE *f = fopen(pidpath, "r");
-  if (!f) return -1;
-
-  if (fread(&psinfo, sizeof(psinfo_t), 1, f) != 1) {
-    fclose (f);
-    return -1;
-  }
-
-  /* XXX correct? */
-
-  *vsize = (size_t) psinfo.pr_size * page_size;
-  *rss = (size_t) psinfo.pr_rssize * 1024;
-
-  fclose (f);
-
-  return 0;
-}
-#endif
-
-
-#ifdef __FreeBSD__
-#define HAVE_GETMEM 1
-#include <kvm.h>
-#include <sys/param.h>
-#include <sys/sysctl.h>
-#include <sys/user.h>
-#include <paths.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-int getmem(size_t *rss, size_t *vsize) {
-  kvm_t *kd = NULL;
-  struct kinfo_proc *kinfo = NULL;
-  pid_t pid;
-  int nprocs;
-  size_t page_size = getpagesize();
-
-  pid = getpid();
-
-  kd = kvm_open(NULL, _PATH_DEVNULL, NULL, O_RDONLY, "kvm_open");
-  if (kd == NULL) goto error;
-
-  kinfo = kvm_getprocs(kd, KERN_PROC_PID, pid, &nprocs);
-  if (kinfo == NULL) goto error;
-
-  *rss = kinfo->ki_rssize * page_size;
-  *vsize = kinfo->ki_size;
-
-  kvm_close(kd);
-
-  return 0;
-
-error:
-  if (kd) kvm_close(kd);
-  return -1;
-}
-#endif  // __FreeBSD__
-
-
-#ifdef __APPLE__
-#define HAVE_GETMEM 1
-/* Researched by Tim Becker and Michael Knight
- * http://blog.kuriositaet.de/?p=257
- */
-
-#include <mach/task.h>
-#include <mach/mach_init.h>
-
-int getmem(size_t *rss, size_t *vsize) {
-  struct task_basic_info t_info;
-  mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
-
-  int r = task_info(mach_task_self(),
-                    TASK_BASIC_INFO,
-                    (task_info_t)&t_info,
-                    &t_info_count);
-
-  if (r != KERN_SUCCESS) return -1;
-
-  *rss = t_info.resident_size;
-  *vsize  = t_info.virtual_size;
-
-  return 0;
-}
-#endif  // __APPLE__
-
-#ifdef __linux__
-# define HAVE_GETMEM 1
-# include <sys/param.h> /* for MAXPATHLEN */
-
-int getmem(size_t *rss, size_t *vsize) {
-  FILE *f = fopen("/proc/self/stat", "r");
-  if (!f) return -1;
-
-  int itmp;
-  char ctmp;
-  char buffer[MAXPATHLEN];
-  size_t page_size = getpagesize();
-
-  /* PID */
-  if (fscanf(f, "%d ", &itmp) == 0) goto error;
-  /* Exec file */
-  if (fscanf (f, "%s ", &buffer[0]) == 0) goto error;
-  /* State */
-  if (fscanf (f, "%c ", &ctmp) == 0) goto error;
-  /* Parent process */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* Process group */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* Session id */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* TTY */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* TTY owner process group */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* Flags */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* Minor faults (no memory page) */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* Minor faults, children */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* Major faults (memory page faults) */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* Major faults, children */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* utime */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* stime */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* utime, children */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* stime, children */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* jiffies remaining in current time slice */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* 'nice' value */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-  /* jiffies until next timeout */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* jiffies until next SIGALRM */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* start time (jiffies since system boot) */
-  if (fscanf (f, "%d ", &itmp) == 0) goto error;
-
-  /* Virtual memory size */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  *vsize = (size_t) itmp;
-
-  /* Resident set size */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  *rss = (size_t) itmp * page_size;
-
-  /* rlim */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* Start of text */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* End of text */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-  /* Start of stack */
-  if (fscanf (f, "%u ", &itmp) == 0) goto error;
-
-  fclose (f);
-
-  return 0;
-
-error:
-  fclose (f);
-  return -1;
-}
-#endif  // __linux__
-
 
 static void CheckStatus(EV_P_ ev_timer *watcher, int revents) {
   assert(watcher == &gc_timer);
   assert(revents == EV_TIMEOUT);
 
-#if HAVE_GETMEM
   // check memory
   size_t rss, vsize;
-  if (!ev_is_active(&gc_idle) && getmem(&rss, &vsize) == 0) {
+  if (!ev_is_active(&gc_idle) && OS::GetMemory(&rss, &vsize) == 0) {
     if (rss > 1024*1024*128) {
       // larger than 128 megs, just start the idle watcher
       ev_idle_start(EV_A_ &gc_idle);
       return;
     }
   }
-#endif // HAVE_GETMEM
 
   double d = ev_now(EV_DEFAULT_UC) - TICK_TIME(3);
 
@@ -1460,12 +1264,9 @@ v8::Handle<v8::Value> MemoryUsage(const v8::Arguments& args) {
   HandleScope scope;
   assert(args.Length() == 0);
 
-#ifndef HAVE_GETMEM
-  return ThrowException(Exception::Error(String::New("Not support on your platform. (Talk to Ryan.)")));
-#else
   size_t rss, vsize;
 
-  int r = getmem(&rss, &vsize);
+  int r = OS::GetMemory(&rss, &vsize);
 
   if (r != 0) {
     return ThrowException(Exception::Error(String::New(strerror(errno))));
@@ -1492,7 +1293,6 @@ v8::Handle<v8::Value> MemoryUsage(const v8::Arguments& args) {
             Integer::NewFromUnsigned(v8_heap_stats.used_heap_size()));
 
   return scope.Close(info);
-#endif
 }
 
 
diff --git a/src/platform.h b/src/platform.h
new file mode 100644
index 0000000000..0b9b9be4ad
--- /dev/null
+++ b/src/platform.h
@@ -0,0 +1,13 @@
+#ifndef NODE_PLATFORM_H_
+#define NODE_PLATFORM_H_
+
+namespace node {
+
+class OS {
+ public:
+  static int GetMemory(size_t *rss, size_t *vsize);
+};
+
+
+}  // namespace node
+#endif  // NODE_PLATFORM_H_
diff --git a/src/platform_darwin.cc b/src/platform_darwin.cc
new file mode 100644
index 0000000000..a1bcc107c4
--- /dev/null
+++ b/src/platform_darwin.cc
@@ -0,0 +1,29 @@
+#include "node.h"
+#include "platform.h"
+
+#include <mach/task.h>
+#include <mach/mach_init.h>
+
+namespace node {
+
+// Researched by Tim Becker and Michael Knight
+// http://blog.kuriositaet.de/?p=257
+int OS::GetMemory(size_t *rss, size_t *vsize) {
+  struct task_basic_info t_info;
+  mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
+
+  int r = task_info(mach_task_self(),
+                    TASK_BASIC_INFO,
+                    (task_info_t)&t_info,
+                    &t_info_count);
+
+  if (r != KERN_SUCCESS) return -1;
+
+  *rss = t_info.resident_size;
+  *vsize  = t_info.virtual_size;
+
+  return 0;
+}
+
+
+}  // namespace node
diff --git a/src/platform_freebsd.cc b/src/platform_freebsd.cc
new file mode 100644
index 0000000000..514b796a8f
--- /dev/null
+++ b/src/platform_freebsd.cc
@@ -0,0 +1,45 @@
+#include "node.h"
+#include "platform.h"
+
+#include <kvm.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+#include <paths.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+namespace node {
+
+
+int OS::GetMemory(size_t *rss, size_t *vsize) {
+  kvm_t *kd = NULL;
+  struct kinfo_proc *kinfo = NULL;
+  pid_t pid;
+  int nprocs;
+  size_t page_size = getpagesize();
+
+  pid = getpid();
+
+  kd = kvm_open(NULL, _PATH_DEVNULL, NULL, O_RDONLY, "kvm_open");
+  if (kd == NULL) goto error;
+
+  kinfo = kvm_getprocs(kd, KERN_PROC_PID, pid, &nprocs);
+  if (kinfo == NULL) goto error;
+
+  *rss = kinfo->ki_rssize * page_size;
+  *vsize = kinfo->ki_size;
+
+  kvm_close(kd);
+
+  return 0;
+
+error:
+  if (kd) kvm_close(kd);
+  return -1;
+}
+
+
+
+}  // namespace node
diff --git a/src/platform_linux.cc b/src/platform_linux.cc
new file mode 100644
index 0000000000..2e2f246ca6
--- /dev/null
+++ b/src/platform_linux.cc
@@ -0,0 +1,91 @@
+#include "node.h"
+#include "platform.h"
+
+# include <sys/param.h> /* for MAXPATHLEN */
+
+
+namespace node {
+
+
+int OS::GetMemory(size_t *rss, size_t *vsize) {
+  FILE *f = fopen("/proc/self/stat", "r");
+  if (!f) return -1;
+
+  int itmp;
+  char ctmp;
+  char buffer[MAXPATHLEN];
+  size_t page_size = getpagesize();
+
+  /* PID */
+  if (fscanf(f, "%d ", &itmp) == 0) goto error;
+  /* Exec file */
+  if (fscanf (f, "%s ", &buffer[0]) == 0) goto error;
+  /* State */
+  if (fscanf (f, "%c ", &ctmp) == 0) goto error;
+  /* Parent process */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* Process group */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* Session id */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* TTY */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* TTY owner process group */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* Flags */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* Minor faults (no memory page) */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* Minor faults, children */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* Major faults (memory page faults) */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* Major faults, children */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* utime */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* stime */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* utime, children */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* stime, children */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* jiffies remaining in current time slice */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* 'nice' value */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+  /* jiffies until next timeout */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* jiffies until next SIGALRM */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* start time (jiffies since system boot) */
+  if (fscanf (f, "%d ", &itmp) == 0) goto error;
+
+  /* Virtual memory size */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  *vsize = (size_t) itmp;
+
+  /* Resident set size */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  *rss = (size_t) itmp * page_size;
+
+  /* rlim */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* Start of text */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* End of text */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+  /* Start of stack */
+  if (fscanf (f, "%u ", &itmp) == 0) goto error;
+
+  fclose (f);
+
+  return 0;
+
+error:
+  fclose (f);
+  return -1;
+}
+
+
+}  // namespace node
diff --git a/src/platform_sunos.cc b/src/platform_sunos.cc
new file mode 100644
index 0000000000..d370dea6e8
--- /dev/null
+++ b/src/platform_sunos.cc
@@ -0,0 +1,52 @@
+#include "node.h"
+#include "platform.h"
+
+
+#include <unistd.h> /* getpagesize() */
+
+#if (!defined(_LP64)) && (_FILE_OFFSET_BITS - 0 == 64)
+#define PROCFS_FILE_OFFSET_BITS_HACK 1
+#undef _FILE_OFFSET_BITS
+#else
+#define PROCFS_FILE_OFFSET_BITS_HACK 0
+#endif
+
+#include <procfs.h>
+
+#if (PROCFS_FILE_OFFSET_BITS_HACK - 0 == 1)
+#define _FILE_OFFSET_BITS 64
+#endif
+
+
+namespace node {
+
+
+int OS::GetMemory(size_t *rss, size_t *vsize) {
+  pid_t pid = getpid();
+
+  size_t page_size = getpagesize();
+  char pidpath[1024];
+  sprintf(pidpath, "/proc/%d/psinfo", pid);
+
+  psinfo_t psinfo;
+  FILE *f = fopen(pidpath, "r");
+  if (!f) return -1;
+
+  if (fread(&psinfo, sizeof(psinfo_t), 1, f) != 1) {
+    fclose (f);
+    return -1;
+  }
+
+  /* XXX correct? */
+
+  *vsize = (size_t) psinfo.pr_size * page_size;
+  *rss = (size_t) psinfo.pr_rssize * 1024;
+
+  fclose (f);
+
+  return 0;
+}
+
+
+}  // namespace node
+
diff --git a/wscript b/wscript
index 9efca2fdfa..9516245198 100644
--- a/wscript
+++ b/wscript
@@ -16,7 +16,6 @@ srcdir = '.'
 blddir = 'build'
 
 
-
 jobs=1
 if os.environ.has_key('JOBS'):
   jobs = int(os.environ['JOBS'])
@@ -278,7 +277,7 @@ def configure(conf):
     conf.env.append_value('CXXFLAGS', '-DHAVE_FDATASYNC=0')
 
   # platform
-  platform_def = '-DPLATFORM=' + sys.platform
+  platform_def = '-DPLATFORM=' + conf.env['DEST_OS']
   conf.env.append_value('CCFLAGS', platform_def)
   conf.env.append_value('CXXFLAGS', platform_def)
 
@@ -468,7 +467,15 @@ def build(bld):
     src/node_timer.cc
     src/node_script.cc
   """
-  if bld.env["USE_OPENSSL"]: node.source += "src/node_crypto.cc"
+
+  platform_file = "src/platform_%s.cc" % bld.env['DEST_OS']
+  if os.path.exists(join(cwd, platform_file)):
+    node.source += platform_file
+  else:
+    node.source += "src/platform_none.cc "
+
+
+  if bld.env["USE_OPENSSL"]: node.source += " src/node_crypto.cc "
 
   node.includes = """
     src/