From 47502282d75c3206dcfc7e2d31e768ca3d5458d7 Mon Sep 17 00:00:00 2001
From: Rickard Green <rickard@erlang.org>
Date: Thu, 2 Nov 2017 19:18:31 +0100
Subject: Remove process start time for crash dumps

---
 erts/emulator/beam/break.c        |  3 ---
 erts/emulator/beam/erl_process.c  |  2 --
 erts/emulator/beam/erl_process.h  |  1 -
 erts/emulator/beam/erl_time.h     |  3 ---
 erts/emulator/beam/erl_time_sup.c | 11 -----------
 5 files changed, 20 deletions(-)

diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c
index d9ee940662..a46063142e 100644
--- a/erts/emulator/beam/break.c
+++ b/erts/emulator/beam/break.c
@@ -209,7 +209,6 @@ static void doit_print_monitor(ErtsMonitor *mon, void *vpcontext)
 void
 print_process_info(fmtfn_t to, void *to_arg, Process *p)
 {
-    time_t approx_started;
     int garbing = 0;
     int running = 0;
     struct saved_calls *scb;
@@ -258,8 +257,6 @@ print_process_info(fmtfn_t to, void *to_arg, Process *p)
     }
 
     erts_print(to, to_arg, "Spawned by: %T\n", p->parent);
-    approx_started = (time_t) p->approx_started;
-    erts_print(to, to_arg, "Started: %s", ctime(&approx_started));
     ERTS_MSGQ_MV_INQ2PRIVQ(p);
     erts_print(to, to_arg, "Message queue length: %d\n", p->msg.len);
 
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 6654468fb6..0433b4ea17 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -11511,7 +11511,6 @@ alloc_process(ErtsRunQueue *rq, erts_aint32_t state)
 
     ASSERT(internal_pid_serial(p->common.id) <= ERTS_MAX_PID_SERIAL);
     
-    p->approx_started = erts_get_approx_time();
     p->rcount = 0;
     p->heap = NULL;
 
@@ -11947,7 +11946,6 @@ void erts_init_empty_process(Process *p)
     p->def_arg_reg[5] = 0;
 
     p->parent = NIL;
-    p->approx_started = 0;
     p->static_flags = 0;
 
     p->common.u.alive.started_interval = 0;
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index 66d7848f89..16b3526208 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -1019,7 +1019,6 @@ struct process {
      * Information mainly for post-mortem use (erl crash dump).
      */
     Eterm parent;		/* Pid of process that created this process. */
-    erts_approx_time_t approx_started; /* Time when started. */
 
     Uint32 static_flags;        /* Flags that do *not* change */
 
diff --git a/erts/emulator/beam/erl_time.h b/erts/emulator/beam/erl_time.h
index 27164d50a0..65211e4e6f 100644
--- a/erts/emulator/beam/erl_time.h
+++ b/erts/emulator/beam/erl_time.h
@@ -107,9 +107,6 @@ void erts_p_slpq(void);
 void erts_get_now_cpu(Uint* megasec, Uint* sec, Uint* microsec);
 #endif
 
-typedef UWord erts_approx_time_t;
-erts_approx_time_t erts_get_approx_time(void);
-
 int erts_has_time_correction(void);
 int erts_check_time_adj_support(int time_correction,
 				ErtsTimeWarpMode time_warp_mode);
diff --git a/erts/emulator/beam/erl_time_sup.c b/erts/emulator/beam/erl_time_sup.c
index f2e0900fec..8cbdf9fa0f 100644
--- a/erts/emulator/beam/erl_time_sup.c
+++ b/erts/emulator/beam/erl_time_sup.c
@@ -191,17 +191,6 @@ static struct {
 
 ErtsTimeSupData erts_time_sup__ erts_align_attribute(ERTS_CACHE_LINE_SIZE);
 
-/*
- * erts_get_approx_time() returns an *approximate* time
- * in seconds. NOTE that this time may jump backwards!!!
- */
-erts_approx_time_t
-erts_get_approx_time(void)
-{
-    ErtsSystemTime stime = erts_os_system_time();
-    return (erts_approx_time_t) ERTS_MONOTONIC_TO_SEC(stime);
-}
-
 static ERTS_INLINE void
 init_time_offset(ErtsMonotonicTime offset)
 {
-- 
cgit v1.2.3