kernel: allocate notes in heap

de-bloat the proc structure by allocating notes
with on the heap instead of embedding them in
the proc structure.

This saves around 640 bytes per process.

1 files changed, 7 insertions, 3 deletions

diff --git a/sys/src/9/port/devproc.c b/sys/src/9/port/devproc.c
index 503b00922..0d4ae5193 100644
--- a/sys/src/9/port/devproc.c
+++ b/sys/src/9/port/devproc.c
@@ -1138,14 +1138,18 @@ procread(Chan *c, void *va, long n, vlong off)
 		if(p->nnote == 0)
 			n = 0;
 		else {
-			i = strlen(p->note[0].msg) + 1;
+			assert(p->note[0] != nil);
+			i = strlen(p->note[0]->msg) + 1;
 			if(i < n)
 				n = i;
-			memmove(va, p->note[0].msg, n-1);
+			memmove(va, p->note[0]->msg, n-1);
 			((char*)va)[n-1] = '\0';
+			free(p->note[0]);
 			if(--p->nnote == 0)
 				p->notepending = 0;
-			memmove(p->note, p->note+1, p->nnote*sizeof(Note));
+			else
+				memmove(&p->note[0], &p->note[1], p->nnote*sizeof(Note*));
+			p->note[p->nnote] = nil;
 		}
 		break;