From c33640664a36b7ba3642f3f22924388a39b06137 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Wed, 13 Nov 2019 20:21:21 +0200
Subject: [PATCH] app/vmselect/promql: use universal approach for determining
 maxByteSliceLen on 32-bit and 64-bit archs

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/235
---
 app/vmselect/promql/arch.go       | 5 +++++
 app/vmselect/promql/arch_386.go   | 3 ---
 app/vmselect/promql/arch_amd64.go | 3 ---
 app/vmselect/promql/arch_arm.go   | 3 ---
 4 files changed, 5 insertions(+), 9 deletions(-)
 create mode 100644 app/vmselect/promql/arch.go
 delete mode 100644 app/vmselect/promql/arch_386.go
 delete mode 100644 app/vmselect/promql/arch_amd64.go
 delete mode 100644 app/vmselect/promql/arch_arm.go

diff --git a/app/vmselect/promql/arch.go b/app/vmselect/promql/arch.go
new file mode 100644
index 000000000..2e21b8674
--- /dev/null
+++ b/app/vmselect/promql/arch.go
@@ -0,0 +1,5 @@
+package promql
+
+import "unsafe"
+
+const maxByteSliceLen = 1<<(31+9*(unsafe.Sizeof(int(0))/8)) - 1
diff --git a/app/vmselect/promql/arch_386.go b/app/vmselect/promql/arch_386.go
deleted file mode 100644
index 1399daa3b..000000000
--- a/app/vmselect/promql/arch_386.go
+++ /dev/null
@@ -1,3 +0,0 @@
-package promql
-
-const maxByteSliceLen = 1<<31 - 1
diff --git a/app/vmselect/promql/arch_amd64.go b/app/vmselect/promql/arch_amd64.go
deleted file mode 100644
index e26cfda4d..000000000
--- a/app/vmselect/promql/arch_amd64.go
+++ /dev/null
@@ -1,3 +0,0 @@
-package promql
-
-const maxByteSliceLen = 1 << 40
diff --git a/app/vmselect/promql/arch_arm.go b/app/vmselect/promql/arch_arm.go
deleted file mode 100644
index 1399daa3b..000000000
--- a/app/vmselect/promql/arch_arm.go
+++ /dev/null
@@ -1,3 +0,0 @@
-package promql
-
-const maxByteSliceLen = 1<<31 - 1