Breakpoints are disabled on gdb attach and unable to pause on a running application

Environment:
Running vscode on Mac
Linux in virtual machine

Launch.json
{
"type": "cppdbg",
"request": "attach",
"name": "engine - Attach",
"program": "${workspaceFolder}/install/bin/engine",
"processId": "${command:pickProcess}",
"logging": { "engineLogging": true, "traceResponse": true },
"sourceFileMap": { "${workspaceRoot}" : "${workspaceRoot}" },
},

Issue 1 : Breakpoints are disabled on gdb attach, Failure to add break points

When adding breakpoint after attach these messages are logged

Thread 
--> E (output): {"type":"event","event":"output","body":{"category":"stdout","output":"1 \"engine\" received signal SIGTRAP, Trace/breakpoint trap.\n"},"seq":839}
1 "engine" received signal SIGTRAP, Trace/breakpoint trap.
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231607) ->~\"0x00007f9bb1237c61 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x564c1ddf2010 <queue_get_sleep_time>, rem=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48\\n\"\n"},"seq":841}
1: (231607) ->~"0x00007f9bb1237c61 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x564c1ddf2010 <queue_get_sleep_time>, rem=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48\n"
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231607) ->~\"48\\tin ../sysdeps/unix/sysv/linux/clock_nanosleep.c\\n\"\n"},"seq":843}
1: (231607) ->~"48\tin ../sysdeps/unix/sysv/linux/clock_nanosleep.c\n"
--> E (output): {"type":"event","event":"output","body":{"category":"stdout","output":"0x00007f9bb1237c61 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x564c1ddf2010 <queue_get_sleep_time>, rem=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48\n"},"seq":845}
0x00007f9bb1237c61 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x564c1ddf2010 <queue_get_sleep_time>, rem=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
--> E (output): {"type":"event","event":"output","body":{"category":"stdout","output":"48\tin ../sysdeps/unix/sysv/linux/clock_nanosleep.c\n"},"seq":847}
48	in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231607) ->*stopped,reason=\"signal-received\",signal-name=\"SIGTRAP\",signal-meaning=\"Trace/breakpoint trap\",frame={addr=\"0x00007f9bb1237c61\",func=\"__GI___clock_nanosleep\",args=[{name=\"clock_id\",value=\"0\"},{name=\"clock_id@entry\",value=\"0\"},{name=\"flags\",value=\"0\"},{name=\"flags@entry\",value=\"0\"},{name=\"req\",value=\"0x564c1ddf2010 <queue_get_sleep_time>\"},{name=\"rem\",value=\"0x0\"}],file=\"../sysdeps/unix/sysv/linux/clock_nanosleep.c\",fullname=\"./time/../sysdeps/unix/sysv/linux/clock_nanosleep.c\",line=\"48\",arch=\"i386:x86-64\"},thread-id=\"1\",stopped-threads=\"all\",core=\"1\"\n"},"seq":849}
1: (231607) ->*stopped,reason="signal-received",signal-name="SIGTRAP",signal-meaning="Trace/breakpoint trap",frame={addr="0x00007f9bb1237c61",func="__GI___clock_nanosleep",args=[{name="clock_id",value="0"},{name="clock_id@entry",value="0"},{name="flags",value="0"},{name="flags@entry",value="0"},{name="req",value="0x564c1ddf2010 <queue_get_sleep_time>"},{name="rem",value="0x0"}],file="../sysdeps/unix/sysv/linux/clock_nanosleep.c",fullname="./time/../sysdeps/unix/sysv/linux/clock_nanosleep.c",line="48",arch="i386:x86-64"},thread-id="1",stopped-threads="all",core="1"
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231607) <-1039-break-insert -f /home/usr1/src/app/validates.cc:1960\n"},"seq":851}
1: (231607) <-1039-break-insert -f /home/usr1/src/app/validates.cc:1960
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231626) ->&\"No source file named /home/usr1/src/app/validates.cc.\\n\"\n"},"seq":853}
1: (231626) ->&"No source file named /home/usr1/src/app/validates.cc.\n"
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231626) ->1039^done,bkpt={number=\"13\",type=\"breakpoint\",disp=\"keep\",enabled=\"y\",addr=\"<PENDING>\",pending=\"/home/usr1/src/app/validates.cc:1960\",times=\"0\",original-location=\"/home/usr1/src/app/validates.cc:1960\"}\n"},"seq":855}
1: (231626) ->1039^done,bkpt={number="13",type="breakpoint",disp="keep",enabled="y",addr="<PENDING>",pending="/home/usr1/src/app/validates.cc:1960",times="0",original-location="/home/usr1/src/app/validates.cc:1960"}
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231626) ->(gdb)\n"},"seq":857}
1: (231626) ->(gdb)
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231626) 1039: elapsed time 18\n"},"seq":859}
1: (231626) 1039: elapsed time 18
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231627) Send Event AD7BreakpointErrorEvent\n"},"seq":861}
1: (231627) Send Event AD7BreakpointErrorEvent
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231627) <--exec-continue\n"},"seq":863}
1: (231627) <--exec-continue
--> R (setBreakpoints-15): {"type":"response","request_seq":15,"success":true,"command":"setBreakpoints","body":{"breakpoints":[{"id":13,"verified":true,"line":1960,"BoundBreakpoints":[]},{"id":2,"verified":false,"message":"Module containing this breakpoint has not yet loaded or the breakpoint address could not be obtained.","line":1980,"BoundBreakpoints":[]}]},"seq":865}
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231627) ->^running\n"},"seq":867}
1: (231627) ->^running
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231627) ->*running,thread-id=\"all\"\n"},"seq":870}
1: (231627) ->*running,thread-id="all"
--> E (breakpoint): {"type":"event","event":"breakpoint","body":{"reason":"changed","breakpoint":{"id":13,"verified":false,"message":"Module containing this breakpoint has not yet loaded or the breakpoint address could not be obtained.","line":1960,"BoundBreakpoints":[]}},"seq":869}
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (231628) ->(gdb)\n"},"seq":873}
1: (231628) ->(gdb)

Issue 2 : unable to pause on a running application

On trying to pause I see this message
Could not load source './time/../sysdeps/unix/sysv/linux/clock_nanosleep.c': 'SourceRequest' not supported..

Start by reproducing the gdb attach scenario from the launch.json configuration and review the logged setBreakpoints, SIGTRAP, and pause behavior. Trace the handling of pending breakpoints and the SourceRequest error; done means breakpoints can be added after attach and a running application can be paused without the reported source-loading failure.