From eb1188a1ddfa15130227e51b52a718dd93bcee6d Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sun, 26 Jul 2020 17:00:54 +0000
Subject: [PATCH 1/2] Enables subset of stats for haiku.

---
 src/stats.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/stats.c b/src/stats.c
index 172a3c0a..4c4f2486 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -466,7 +466,7 @@ static void mi_process_info(mi_msecs_t* utime, mi_msecs_t* stime, size_t* peak_r
   *page_reclaim = 0;
 }
 
-#elif defined(__unix__) || defined(__unix) || defined(unix) || (defined(__APPLE__) && defined(__MACH__))
+#elif defined(__unix__) || defined(__unix) || defined(unix) || (defined(__APPLE__) && defined(__MACH__)) || defined(__HAIKU__)
 #include <stdio.h>
 #include <unistd.h>
 #include <sys/resource.h>
@@ -482,6 +482,7 @@ static mi_msecs_t timeval_secs(const struct timeval* tv) {
 static void mi_process_info(mi_msecs_t* utime, mi_msecs_t* stime, size_t* peak_rss, size_t* page_faults, size_t* page_reclaim, size_t* peak_commit) {
   struct rusage rusage;
   getrusage(RUSAGE_SELF, &rusage);
+#if !defined(__HAIKU__)
 #if defined(__APPLE__) && defined(__MACH__)
   *peak_rss = rusage.ru_maxrss;
 #else
@@ -490,6 +491,14 @@ static void mi_process_info(mi_msecs_t* utime, mi_msecs_t* stime, size_t* peak_r
   *page_faults = rusage.ru_majflt;
   *page_reclaim = rusage.ru_minflt;
   *peak_commit = 0;
+#else
+// Haiku does not have (yet?) a way to
+// get these stats per process
+  *peak_rss = 0;
+  *page_faults = 0;
+  *page_reclaim = 0;
+  *peak_commit = 0;
+#endif
   *utime = timeval_secs(&rusage.ru_utime);
   *stime = timeval_secs(&rusage.ru_stime);
 }

From d964be2caa5a1f9837f9b0bb45e6296259e94a19 Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sun, 26 Jul 2020 18:56:10 +0000
Subject: [PATCH 2/2] getting resident mem at least

---
 src/stats.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/stats.c b/src/stats.c
index 4c4f2486..203bad81 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -475,6 +475,10 @@ static void mi_process_info(mi_msecs_t* utime, mi_msecs_t* stime, size_t* peak_r
 #include <mach/mach.h>
 #endif
 
+#if defined(__HAIKU__)
+#include <kernel/OS.h>
+#endif
+
 static mi_msecs_t timeval_secs(const struct timeval* tv) {
   return ((mi_msecs_t)tv->tv_sec * 1000L) + ((mi_msecs_t)tv->tv_usec / 1000L);
 }
@@ -494,10 +498,18 @@ static void mi_process_info(mi_msecs_t* utime, mi_msecs_t* stime, size_t* peak_r
 #else
 // Haiku does not have (yet?) a way to
 // get these stats per process
+  thread_info tid;
+  area_info mem;
+  ssize_t c;
   *peak_rss = 0;
   *page_faults = 0;
   *page_reclaim = 0;
   *peak_commit = 0;
+  get_thread_info(find_thread(0), &tid);
+
+  while (get_next_area_info(tid.team, &c, &mem) == B_OK) {
+      *peak_rss += mem.ram_size;
+  }
 #endif
   *utime = timeval_secs(&rusage.ru_utime);
   *stime = timeval_secs(&rusage.ru_stime);