runtime capture: registry heartbeat decodes live DSP tables (WIN 0.540658, freq-axis@48k, per-bin weights), rtsnap_fast/findctx/rtchunk infra

rtsnap_fast.py

@@ -0,0 +1,44 @@
+import subprocess, os, glob, time, struct, sys
+def mem_open(pid): return os.open(f'/proc/{pid}/mem', os.O_RDONLY)
+def find_hosts():
+    hosts=[]
+    for p in glob.glob('/proc/[0-9]*'):
+        pid=int(os.path.basename(p))
+        try:
+            cmd=open(f'/proc/{pid}/cmdline','rb').read().replace(b'\0',b' ').decode('utf8','replace')
+            maps=open(f'/proc/{pid}/maps').read()
+        except Exception: continue
+        if 'soothe2' in maps and 'reaper' not in cmd:
+            hosts.append(pid)
+    return hosts
+os.system("pkill -9 -x reaper 2>/dev/null; pkill -9 -f '[y]abridge' 2>/dev/null; sleep 1")
+proc=subprocess.Popen(['/usr/bin/reaper','-nosplash','-ignoreerrors','-renderproject','/home/m/soothe-bt/render_long.rpp'],
+                      stdout=open('/dev/null','w'),stderr=subprocess.STDOUT)
+# wait for host
+t0=time.time(); host=None
+while time.time()-t0<60 and not host:
+    hs=find_hosts()
+    host=hs[0] if hs else None
+    time.sleep(0.2)
+print('host',host, flush=True)
+time.sleep(6)  # let render warm up, tables built
+fd=mem_open(host)
+out=open('/tmp/snap_all.bin','wb')
+idx=open('/tmp/snap_all.idx','wb')
+t0=time.time(); nreg=0; nbytes=0
+for line in open(f'/proc/{host}/maps').read().splitlines():
+    p=line.split(); lo,hi=(int(x,16) for x in p[0].split('-'))
+    if 'r' not in p[1]: continue
+    a=lo
+    while a<hi:
+        n=min(hi-a, 8*1024*1024)
+        try: d=os.pread(fd,n,a)
+        except Exception: a+=n; continue
+        if not d: a+=n; continue
+        out.write(struct.pack('<QQ',a,len(d))); out.write(d)
+        idx.write(struct.pack('<QQ',a,len(d)))
+        nreg+=1; nbytes+=len(d)
+        a+=n
+out.close(); idx.close()
+print('snapshot ok: %d regs %d MB in %.1fs'%(nreg,nbytes/1e6,time.time()-t0), flush=True)
+if proc.poll() is None: proc.kill()