removing (outdated) drawterm

drawterm is much better maintained by russ cox,
so removing this outdated copy.

for a more recent version, go to:

http://swtch.com/drawterm/

1 files changed, 0 insertions, 165 deletions

diff --git a/sys/src/cmd/unix/drawterm/kern/allocb.c b/sys/src/cmd/unix/drawterm/kern/allocb.c
deleted file mode 100644
index ab1595c89..000000000
--- a/sys/src/cmd/unix/drawterm/kern/allocb.c
+++ /dev/null
@@ -1,165 +0,0 @@
-#include	"u.h"
-#include	"lib.h"
-#include	"dat.h"
-#include	"fns.h"
-#include	"error.h"
-
-enum
-{
-	Hdrspc		= 64,		/* leave room for high-level headers */
-	Bdead		= 0x51494F42,	/* "QIOB" */
-};
-
-struct
-{
-	Lock	lk;
-	ulong	bytes;
-} ialloc;
-
-static Block*
-_allocb(int size)
-{
-	Block *b;
-	uintptr addr;
-
-	if((b = mallocz(sizeof(Block)+size+Hdrspc, 0)) == nil)
-		return nil;
-
-	b->next = nil;
-	b->list = nil;
-	b->free = 0;
-	b->flag = 0;
-
-	/* align start of data portion by rounding up */
-	addr = (uintptr)b;
-	addr = ROUND(addr + sizeof(Block), BLOCKALIGN);
-	b->base = (uchar*)addr;
-
-	/* align end of data portion by rounding down */
-	b->lim = ((uchar*)b) + sizeof(Block)+size+Hdrspc;
-	addr = (uintptr)(b->lim);
-	addr = addr & ~(BLOCKALIGN-1);
-	b->lim = (uchar*)addr;
-
-	/* leave sluff at beginning for added headers */
-	b->rp = b->lim - ROUND(size, BLOCKALIGN);
-	if(b->rp < b->base)
-		panic("_allocb");
-	b->wp = b->rp;
-
-	return b;
-}
-
-Block*
-allocb(int size)
-{
-	Block *b;
-
-	/*
-	 * Check in a process and wait until successful.
-	 * Can still error out of here, though.
-	 */
-	if(up == nil)
-		panic("allocb without up: %p\n", getcallerpc(&size));
-	if((b = _allocb(size)) == nil){
-		panic("allocb: no memory for %d bytes\n", size);
-	}
-	setmalloctag(b, getcallerpc(&size));
-
-	return b;
-}
-
-Block*
-iallocb(int size)
-{
-	Block *b;
-	static int m1, m2;
-
-	if(ialloc.bytes > conf.ialloc){
-		if((m1++%10000)==0)
-			print("iallocb: limited %lud/%lud\n",
-				ialloc.bytes, conf.ialloc);
-		return 0;
-	}
-
-	if((b = _allocb(size)) == nil){
-		if((m2++%10000)==0)
-			print("iallocb: no memory %lud/%lud\n",
-				ialloc.bytes, conf.ialloc);
-		return nil;
-	}
-	setmalloctag(b, getcallerpc(&size));
-	b->flag = BINTR;
-
-	ilock(&ialloc.lk);
-	ialloc.bytes += b->lim - b->base;
-	iunlock(&ialloc.lk);
-
-	return b;
-}
-
-void
-freeb(Block *b)
-{
-	void *dead = (void*)Bdead;
-
-	if(b == nil)
-		return;
-
-	/*
-	 * drivers which perform non cache coherent DMA manage their own buffer
-	 * pool of uncached buffers and provide their own free routine.
-	 */
-	if(b->free) {
-		b->free(b);
-		return;
-	}
-	if(b->flag & BINTR) {
-		ilock(&ialloc.lk);
-		ialloc.bytes -= b->lim - b->base;
-		iunlock(&ialloc.lk);
-	}
-
-	/* poison the block in case someone is still holding onto it */
-	b->next = dead;
-	b->rp = dead;
-	b->wp = dead;
-	b->lim = dead;
-	b->base = dead;
-
-	free(b);
-}
-
-void
-checkb(Block *b, char *msg)
-{
-	void *dead = (void*)Bdead;
-
-	if(b == dead)
-		panic("checkb b %s %lux", msg, b);
-	if(b->base == dead || b->lim == dead || b->next == dead
-	  || b->rp == dead || b->wp == dead){
-		print("checkb: base 0x%8.8luX lim 0x%8.8luX next 0x%8.8luX\n",
-			b->base, b->lim, b->next);
-		print("checkb: rp 0x%8.8luX wp 0x%8.8luX\n", b->rp, b->wp);
-		panic("checkb dead: %s\n", msg);
-	}
-
-	if(b->base > b->lim)
-		panic("checkb 0 %s %lux %lux", msg, b->base, b->lim);
-	if(b->rp < b->base)
-		panic("checkb 1 %s %lux %lux", msg, b->base, b->rp);
-	if(b->wp < b->base)
-		panic("checkb 2 %s %lux %lux", msg, b->base, b->wp);
-	if(b->rp > b->lim)
-		panic("checkb 3 %s %lux %lux", msg, b->rp, b->lim);
-	if(b->wp > b->lim)
-		panic("checkb 4 %s %lux %lux", msg, b->wp, b->lim);
-
-}
-
-void
-iallocsummary(void)
-{
-	print("ialloc %lud/%lud\n", ialloc.bytes, conf.ialloc);
-}